121652538 has 32 divisors (see below), whose sum is σ = 280264704. Its totient is φ = 34482672.

The previous prime is 121652507. The next prime is 121652563. The reversal of 121652538 is 835256121.

It is a junction number, because it is equal to n+sod(n) for n = 121652499 and 121652508.

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 15 ways as a sum of consecutive naturals, for example, 6070 + ... + 16737.

It is an arithmetic number, because the mean of its divisors is an integer number (8758272).

Almost surely, 2^121652538 is an apocalyptic number.

121652538 is an abundant number, since it is smaller than the sum of its proper divisors (158612166).

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

121652538 is a wasteful number, since it uses less digits than its factorization.

121652538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22946.

The product of its digits is 14400, while the sum is 33.

The square root of 121652538 is about 11029.6209363695. The cubic root of 121652538 is about 495.4962720038.

The spelling of 121652538 in words is "one hundred twenty-one million, six hundred fifty-two thousand, five hundred thirty-eight".