140423242 has 12 divisors (see below), whose sum is σ = 217651698. Its totient is φ = 67945800.

The previous prime is 140423207. The next prime is 140423317. The reversal of 140423242 is 242324041.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 139499721 + 923521 = 11811^2 + 961^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34609 + ... + 38452.

Almost surely, 2^140423242 is an apocalyptic number.

140423242 is a deficient number, since it is larger than the sum of its proper divisors (77228456).

140423242 is an equidigital number, since it uses as much as digits as its factorization.

140423242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73125 (or 73094 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 140423242 is about 11850.0313079755. The cubic root of 140423242 is about 519.7721412935.

Adding to 140423242 its reverse (242324041), we get a palindrome (382747283).

The spelling of 140423242 in words is "one hundred forty million, four hundred twenty-three thousand, two hundred forty-two".