142552431 has 24 divisors (see below), whose sum is σ = 235682304. Its totient is φ = 81334800.

The previous prime is 142552427. The next prime is 142552433. The reversal of 142552431 is 134255241.

It is not a de Polignac number, because 142552431 - 2² = 142552427 is a prime.

It is a super-2 number, since 2×142552431² = 40642391168019522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142552395 and 142552404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142552433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54606 + ... + 57156.

It is an arithmetic number, because the mean of its divisors is an integer number (9820096).

Almost surely, 2^142552431 is an apocalyptic number.

142552431 is a deficient number, since it is larger than the sum of its proper divisors (93129873).

142552431 is a wasteful number, since it uses less digits than its factorization.

142552431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451 (or 3448 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 142552431 is about 11939.5322772712. The cubic root of 142552431 is about 522.3860160540.

The spelling of 142552431 in words is "one hundred forty-two million, five hundred fifty-two thousand, four hundred thirty-one".