142538457 has 8 divisors (see below), whose sum is σ = 190195776. Its totient is φ = 94953392.

The previous prime is 142538441. The next prime is 142538477. The reversal of 142538457 is 754835241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142538457 - 2⁴ = 142538441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142538477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13278 + ... + 21479.

It is an arithmetic number, because the mean of its divisors is an integer number (23774472).

Almost surely, 2^142538457 is an apocalyptic number.

It is an amenable number.

142538457 is a deficient number, since it is larger than the sum of its proper divisors (47657319).

142538457 is a wasteful number, since it uses less digits than its factorization.

142538457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36127.

The product of its digits is 134400, while the sum is 39.

The square root of 142538457 is about 11938.9470641259. The cubic root of 142538457 is about 522.3689461691.

The spelling of 142538457 in words is "one hundred forty-two million, five hundred thirty-eight thousand, four hundred fifty-seven".