142631473 has 4 divisors (see below), whose sum is σ = 145948528. Its totient is φ = 139314420.

The previous prime is 142631449. The next prime is 142631477. The reversal of 142631473 is 374136241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142631473 - 2¹⁷ = 142500401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142631477) 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, 1658463 + ... + 1658548.

It is an arithmetic number, because the mean of its divisors is an integer number (36487132).

Almost surely, 2^142631473 is an apocalyptic number.

It is an amenable number.

142631473 is a deficient number, since it is larger than the sum of its proper divisors (3317055).

142631473 is an equidigital number, since it uses as much as digits as its factorization.

142631473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3317054.

The product of its digits is 12096, while the sum is 31.

The square root of 142631473 is about 11942.8419147203. The cubic root of 142631473 is about 522.4825485041.

The spelling of 142631473 in words is "one hundred forty-two million, six hundred thirty-one thousand, four hundred seventy-three".