121560436 has 24 divisors (see below), whose sum is σ = 215157824. Its totient is φ = 60091200.

The previous prime is 121560433. The next prime is 121560457. The reversal of 121560436 is 634065121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121560433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188731 + ... + 189373.

Almost surely, 2^121560436 is an apocalyptic number.

It is an amenable number.

121560436 is a deficient number, since it is larger than the sum of its proper divisors (93597388).

121560436 is a wasteful number, since it uses less digits than its factorization.

121560436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111 (or 1109 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 121560436 is about 11025.4449343326. Note that the first 3 decimals coincide. The cubic root of 121560436 is about 495.3711952342.

The spelling of 121560436 in words is "one hundred twenty-one million, five hundred sixty thousand, four hundred thirty-six".