142157452 has 12 divisors (see below), whose sum is σ = 249956056. Its totient is φ = 70741440.

The previous prime is 142157443. The next prime is 142157459. The reversal of 142157452 is 254751241.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (142157459) 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, 83373 + ... + 85060.

Almost surely, 2^142157452 is an apocalyptic number.

It is an amenable number.

142157452 is a deficient number, since it is larger than the sum of its proper divisors (107798604).

142157452 is a wasteful number, since it uses less digits than its factorization.

142157452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168648 (or 168646 counting only the distinct ones).

The product of its digits is 11200, while the sum is 31.

The square root of 142157452 is about 11922.9799966284. The cubic root of 142157452 is about 521.9031004841.

The spelling of 142157452 in words is "one hundred forty-two million, one hundred fifty-seven thousand, four hundred fifty-two".