151942157 has 4 divisors (see below), whose sum is σ = 152091996. Its totient is φ = 151792320.

The previous prime is 151942139. The next prime is 151942171. The reversal of 151942157 is 751249151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 751249151 = 19 ⋅39539429.

It can be written as a sum of positive squares in 2 ways, for example, as 87123556 + 64818601 = 9334^2 + 8051^2 .

It is a cyclic number.

It is not a de Polignac number, because 151942157 - 2⁶ = 151942093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151942057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73388 + ... + 75429.

It is an arithmetic number, because the mean of its divisors is an integer number (38022999).

Almost surely, 2^151942157 is an apocalyptic number.

It is an amenable number.

151942157 is a deficient number, since it is larger than the sum of its proper divisors (149839).

151942157 is a wasteful number, since it uses less digits than its factorization.

151942157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149838.

The product of its digits is 12600, while the sum is 35.

The square root of 151942157 is about 12326.4819393045. The cubic root of 151942157 is about 533.6126245077.

The spelling of 151942157 in words is "one hundred fifty-one million, nine hundred forty-two thousand, one hundred fifty-seven".