121974636 has 24 divisors (see below), whose sum is σ = 325265920. Its totient is φ = 34849872.

The previous prime is 121974599. The next prime is 121974641. The reversal of 121974636 is 636479121.

It is a junction number, because it is equal to n+sod(n) for n = 121974594 and 121974603.

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, 725956 + ... + 726123.

Almost surely, 2^121974636 is an apocalyptic number.

It is an amenable number.

121974636 is an abundant number, since it is smaller than the sum of its proper divisors (203291284).

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

121974636 is a wasteful number, since it uses less digits than its factorization.

121974636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452093 (or 1452091 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 121974636 is about 11044.2127831729. The cubic root of 121974636 is about 495.9331931787.

It can be divided in two parts, 1219 and 74636, that added together give a triangular number (75855 = T₃₈₉).

The spelling of 121974636 in words is "one hundred twenty-one million, nine hundred seventy-four thousand, six hundred thirty-six".