142631474 has 16 divisors (see below), whose sum is σ = 217437696. Its totient is φ = 70156800.

The previous prime is 142631449. The next prime is 142631477. The reversal of 142631474 is 474136241.

It is a self number, because there is not a number n which added to its sum of digits gives 142631474.

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 7 ways as a sum of consecutive naturals, for example, 90239 + ... + 91805.

It is an arithmetic number, because the mean of its divisors is an integer number (13589856).

Almost surely, 2^142631474 is an apocalyptic number.

142631474 is a deficient number, since it is larger than the sum of its proper divisors (74806222).

142631474 is a wasteful number, since it uses less digits than its factorization.

142631474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281.

The product of its digits is 16128, while the sum is 32.

The square root of 142631474 is about 11942.8419565864. The cubic root of 142631474 is about 522.4825497251.

The spelling of 142631474 in words is "one hundred forty-two million, six hundred thirty-one thousand, four hundred seventy-four".