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121214020 = 22543313997
BaseRepresentation
bin1110011100110…
…01010001000100
322110002022101011
413032121101010
5222012322040
620010012004
73001205434
oct716312104
9273068334
10121214020
1162470984
1234717004
131c160695
14121542c4
15a9953ea
hex7399444

121214020 has 24 divisors (see below), whose sum is σ = 255155544. Its totient is φ = 48370176.

The previous prime is 121214017. The next prime is 121214069. The reversal of 121214020 is 20412121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1048576 + 120165444 = 1024^2 + 10962^2 .

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, 1662 + ... + 15658.

It is an arithmetic number, because the mean of its divisors is an integer number (10631481).

Almost surely, 2121214020 is an apocalyptic number.

121214020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121214020 is an abundant number, since it is smaller than the sum of its proper divisors (133941524).

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

121214020 is a wasteful number, since it uses less digits than its factorization.

121214020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14439 (or 14437 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 121214020 is about 11009.7238839128. The cubic root of 121214020 is about 494.9001873368.

Adding to 121214020 its reverse (20412121), we get a palindrome (141626141).

The spelling of 121214020 in words is "one hundred twenty-one million, two hundred fourteen thousand, twenty".

Divisors: 1 2 4 5 10 20 433 866 1732 2165 4330 8660 13997 27994 55988 69985 139970 279940 6060701 12121402 24242804 30303505 60607010 121214020