121187952 has 60 divisors (see below), whose sum is σ = 339922440. Its totient is φ = 40305024.

The previous prime is 121187939. The next prime is 121187953. The reversal of 121187952 is 259781121.

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 (121187953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101503 + ... + 102689.

It is an arithmetic number, because the mean of its divisors is an integer number (5665374).

Almost surely, 2^121187952 is an apocalyptic number.

121187952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121187952 is an abundant number, since it is smaller than the sum of its proper divisors (218734488).

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

121187952 is a wasteful number, since it uses less digits than its factorization.

121187952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910 (or 1901 counting only the distinct ones).

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

The square root of 121187952 is about 11008.5399576874. The cubic root of 121187952 is about 494.8647074393.

The spelling of 121187952 in words is "one hundred twenty-one million, one hundred eighty-seven thousand, nine hundred fifty-two".