121269904 has 30 divisors (see below), whose sum is σ = 273323094. Its totient is φ = 51972480.

The previous prime is 121269901. The next prime is 121269919. The reversal of 121269904 is 409962121.

It can be written as a sum of positive squares in only one way, i.e., 115605504 + 5664400 = 10752^2 + 2380^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 121269904.

It is not an unprimeable number, because it can be changed into a prime (121269901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76557 + ... + 78124.

Almost surely, 2^121269904 is an apocalyptic number.

121269904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121269904 is an abundant number, since it is smaller than the sum of its proper divisors (152053190).

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

121269904 is a wasteful number, since it uses less digits than its factorization.

121269904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154703 (or 154690 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 121269904 is about 11012.2615297676. The cubic root of 121269904 is about 494.9762312159.

The spelling of 121269904 in words is "one hundred twenty-one million, two hundred sixty-nine thousand, nine hundred four".