121879152 has 30 divisors (see below), whose sum is σ = 341092752. Its totient is φ = 40626336.

The previous prime is 121879151. The next prime is 121879189. The reversal of 121879152 is 251978121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121879151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 423048 + ... + 423335.

Almost surely, 2^121879152 is an apocalyptic number.

121879152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121879152 is an abundant number, since it is smaller than the sum of its proper divisors (219213600).

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

121879152 is a wasteful number, since it uses less digits than its factorization.

121879152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846397 (or 846388 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 121879152 is about 11039.8891298781. The cubic root of 121879152 is about 495.8037508389.

The spelling of 121879152 in words is "one hundred twenty-one million, eight hundred seventy-nine thousand, one hundred fifty-two".