121615460 has 24 divisors (see below), whose sum is σ = 255600576. Its totient is φ = 48606560.

The previous prime is 121615457. The next prime is 121615489. The reversal of 121615460 is 64516121.

It is a super-2 number, since 2×121615460² = 29580640222023200, which contains 22 as substring.

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, 43505 + ... + 46215.

It is an arithmetic number, because the mean of its divisors is an integer number (10650024).

Almost surely, 2^121615460 is an apocalyptic number.

121615460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121615460 is an abundant number, since it is smaller than the sum of its proper divisors (133985116).

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

121615460 is a wasteful number, since it uses less digits than its factorization.

121615460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4963 (or 4961 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 121615460 is about 11027.9399708196. The cubic root of 121615460 is about 495.4459267667.

It can be divided in two parts, 1216154 and 60, that multiplied together give a triangular number (72969240 = T₁₂₀₈₀).

The spelling of 121615460 in words is "one hundred twenty-one million, six hundred fifteen thousand, four hundred sixty".