142931601 has 16 divisors (see below), whose sum is σ = 215224320. Its totient is φ = 93724560.

The previous prime is 142931599. The next prime is 142931609. The reversal of 142931601 is 106139241.

142931601 is a `hidden beast` number, since 1 + 4 + 29 + 31 + 601 = 666.

It is not a de Polignac number, because 142931601 - 2¹ = 142931599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142931609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41745 + ... + 45038.

It is an arithmetic number, because the mean of its divisors is an integer number (13451520).

Almost surely, 2^142931601 is an apocalyptic number.

It is an amenable number.

142931601 is a deficient number, since it is larger than the sum of its proper divisors (72292719).

142931601 is an equidigital number, since it uses as much as digits as its factorization.

142931601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86853 (or 86847 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 142931601 is about 11955.4004951737. The cubic root of 142931601 is about 522.8487645027.

The spelling of 142931601 in words is "one hundred forty-two million, nine hundred thirty-one thousand, six hundred one".