121139460 has 72 divisors (see below), whose sum is σ = 395729880. Its totient is φ = 29818368.

The previous prime is 121139441. The next prime is 121139477. The reversal of 121139460 is 64931121.

121139460 is a `hidden beast` number, since 1 + 211 + 394 + 60 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3069504 + 118069956 = 1752^2 + 10866^2 .

It is a super-3 number, since 3×121139460³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23545 + ... + 28224.

Almost surely, 2^121139460 is an apocalyptic number.

121139460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121139460 is an abundant number, since it is smaller than the sum of its proper divisors (274590420).

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

121139460 is a wasteful number, since it uses less digits than its factorization.

121139460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51797 (or 51792 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 121139460 is about 11006.3372654121. The cubic root of 121139460 is about 494.7986937792.

The spelling of 121139460 in words is "one hundred twenty-one million, one hundred thirty-nine thousand, four hundred sixty".