121945936 has 40 divisors (see below), whose sum is σ = 276313664. Its totient is φ = 51045120.

The previous prime is 121945927. The next prime is 121945949. The reversal of 121945936 is 639549121.

It is a super-2 number, since 2×121945936² = 29741622613832192, which contains 22 as substring.

It is a congruent number.

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, 7845 + ... + 17476.

Almost surely, 2^121945936 is an apocalyptic number.

121945936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121945936 is an abundant number, since it is smaller than the sum of its proper divisors (154367728).

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

121945936 is a wasteful number, since it uses less digits than its factorization.

121945936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25379 (or 25373 counting only the distinct ones).

The product of its digits is 58320, while the sum is 40.

The square root of 121945936 is about 11042.9133837045. The cubic root of 121945936 is about 495.8942932904.

The spelling of 121945936 in words is "one hundred twenty-one million, nine hundred forty-five thousand, nine hundred thirty-six".