121534392 has 128 divisors (see below), whose sum is σ = 368271360. Its totient is φ = 32672640.

The previous prime is 121534379. The next prime is 121534397. The reversal of 121534392 is 293435121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121534397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 274123 + ... + 274565.

It is an arithmetic number, because the mean of its divisors is an integer number (2877120).

Almost surely, 2^121534392 is an apocalyptic number.

121534392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121534392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184135680).

121534392 is an abundant number, since it is smaller than the sum of its proper divisors (246736968).

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

121534392 is a wasteful number, since it uses less digits than its factorization.

121534392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553 (or 549 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 121534392 is about 11024.2637849427. The cubic root of 121534392 is about 495.3358153872.

The spelling of 121534392 in words is "one hundred twenty-one million, five hundred thirty-four thousand, three hundred ninety-two".