121526636 has 48 divisors (see below), whose sum is σ = 266461440. Its totient is φ = 47113920.

The previous prime is 121526627. The next prime is 121526651. The reversal of 121526636 is 636625121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69671 + ... + 71393.

It is an arithmetic number, because the mean of its divisors is an integer number (5551280).

Almost surely, 2^121526636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121526636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133230720).

121526636 is an abundant number, since it is smaller than the sum of its proper divisors (144934804).

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

121526636 is a wasteful number, since it uses less digits than its factorization.

121526636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974 (or 1972 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 121526636 is about 11023.9120098085. The cubic root of 121526636 is about 495.3252781605.

The spelling of 121526636 in words is "one hundred twenty-one million, five hundred twenty-six thousand, six hundred thirty-six".