121342152 has 16 divisors (see below), whose sum is σ = 303355440. Its totient is φ = 40447376.

The previous prime is 121342139. The next prime is 121342157. The reversal of 121342152 is 251243121.

It is a super-2 number, since 2×121342152² = 29447835703982208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121342157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2527938 + ... + 2527985.

It is an arithmetic number, because the mean of its divisors is an integer number (18959715).

Almost surely, 2^121342152 is an apocalyptic number.

121342152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121342152 is an abundant number, since it is smaller than the sum of its proper divisors (182013288).

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

121342152 is a wasteful number, since it uses less digits than its factorization.

121342152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055932 (or 5055928 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 121342152 is about 11015.5413847890. The cubic root of 121342152 is about 495.0745077111.

Adding to 121342152 its reverse (251243121), we get a palindrome (372585273).

It can be divided in two parts, 1213 and 42152, that added together give a triangular number (43365 = T₂₉₄).

The spelling of 121342152 in words is "one hundred twenty-one million, three hundred forty-two thousand, one hundred fifty-two".