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121230410 = 2572247409
BaseRepresentation
bin1110011100111…
…01010001001010
322110010010212012
413032131101022
5222013333120
620010215522
73001304300
oct716352112
9273103765
10121230410
1162482224
12347245a2
131c167c92
141215a270
15a99a1c5
hex739d44a

121230410 has 24 divisors (see below), whose sum is σ = 253842660. Its totient is φ = 41564544.

The previous prime is 121230409. The next prime is 121230433. The reversal of 121230410 is 14032121.

It can be written as a sum of positive squares in 2 ways, for example, as 111872929 + 9357481 = 10577^2 + 3059^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123215 + ... + 124194.

Almost surely, 2121230410 is an apocalyptic number.

121230410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121230410 is an abundant number, since it is smaller than the sum of its proper divisors (132612250).

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

121230410 is a wasteful number, since it uses less digits than its factorization.

121230410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247430 (or 247423 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 121230410 is about 11010.4682007624. The cubic root of 121230410 is about 494.9224923707.

Adding to 121230410 its reverse (14032121), we get a palindrome (135262531).

The spelling of 121230410 in words is "one hundred twenty-one million, two hundred thirty thousand, four hundred ten".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 490 247409 494818 1237045 1731863 2474090 3463726 8659315 12123041 17318630 24246082 60615205 121230410