121942152 has 128 divisors (see below), whose sum is σ = 365376000. Its totient is φ = 37558080.

The previous prime is 121942103. The next prime is 121942169. The reversal of 121942152 is 251249121.

It is a super-2 number, since 2×121942152² = 29739776868782208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176127 + ... + 176817.

It is an arithmetic number, because the mean of its divisors is an integer number (2854500).

Almost surely, 2^121942152 is an apocalyptic number.

121942152 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 121942152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182688000).

121942152 is an abundant number, since it is smaller than the sum of its proper divisors (243433848).

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

121942152 is a wasteful number, since it uses less digits than its factorization.

121942152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768 (or 758 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 121942152 is about 11042.7420507771. The cubic root of 121942152 is about 495.8891640135.

The spelling of 121942152 in words is "one hundred twenty-one million, nine hundred forty-two thousand, one hundred fifty-two".