140231424 has 36 divisors (see below), whose sum is σ = 373222136. Its totient is φ = 46743552.

The previous prime is 140231411. The next prime is 140231449. The reversal of 140231424 is 424132041.

It is a self number, because there is not a number n which added to its sum of digits gives 140231424.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90529 + ... + 92064.

Almost surely, 2^140231424 is an apocalyptic number.

It is an amenable number.

140231424 is an abundant number, since it is smaller than the sum of its proper divisors (232990712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140231424 is an equidigital number, since it uses as much as digits as its factorization.

140231424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182612 (or 182598 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 140231424 is about 11841.9349770213. The cubic root of 140231424 is about 519.5353640499.

Adding to 140231424 its reverse (424132041), we get a palindrome (564363465).

The spelling of 140231424 in words is "one hundred forty million, two hundred thirty-one thousand, four hundred twenty-four".