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121443500 = 2253242887
BaseRepresentation
bin1110011110100…
…01010010101100
322110111222011102
413033101102230
5222042143000
620014542232
73003152453
oct717212254
9273458142
10121443500
1162608332
1234807978
131c210c79
14121b3b9a
15a9dd3d5
hex73d14ac

121443500 has 24 divisors (see below), whose sum is σ = 265233696. Its totient is φ = 48577200.

The previous prime is 121443479. The next prime is 121443521. The reversal of 121443500 is 5344121.

It is an interprime number because it is at equal distance from previous prime (121443479) and next prime (121443521).

It is a super-3 number, since 3×1214435003 (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120944 + ... + 121943.

It is an arithmetic number, because the mean of its divisors is an integer number (11051404).

Almost surely, 2121443500 is an apocalyptic number.

121443500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121443500 is an abundant number, since it is smaller than the sum of its proper divisors (143790196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121443500 is a wasteful number, since it uses less digits than its factorization.

121443500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242906 (or 242894 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 121443500 is about 11020.1406524599. The cubic root of 121443500 is about 495.2123022252.

Adding to 121443500 its reverse (5344121), we get a palindrome (126787621).

The spelling of 121443500 in words is "one hundred twenty-one million, four hundred forty-three thousand, five hundred".

Divisors: 1 2 4 5 10 20 25 50 100 125 250 500 242887 485774 971548 1214435 2428870 4857740 6072175 12144350 24288700 30360875 60721750 121443500