121538937 has 16 divisors (see below), whose sum is σ = 174847680. Its totient is φ = 74651712.

The previous prime is 121538929. The next prime is 121538939. The reversal of 121538937 is 739835121.

It is not a de Polignac number, because 121538937 - 2³ = 121538929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 121538895 and 121538904.

It is not an unprimeable number, because it can be changed into a prime (121538939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20239 + ... + 25547.

It is an arithmetic number, because the mean of its divisors is an integer number (10927980).

Almost surely, 2^121538937 is an apocalyptic number.

It is an amenable number.

121538937 is a deficient number, since it is larger than the sum of its proper divisors (53308743).

121538937 is a wasteful number, since it uses less digits than its factorization.

121538937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5912.

The product of its digits is 45360, while the sum is 39.

The square root of 121538937 is about 11024.4699192297. The cubic root of 121538937 is about 495.3419899720.

The spelling of 121538937 in words is "one hundred twenty-one million, five hundred thirty-eight thousand, nine hundred thirty-seven".