140312442 has 16 divisors (see below), whose sum is σ = 281513952. Its totient is φ = 46622640.

The previous prime is 140312423. The next prime is 140312449. The reversal of 140312442 is 244213041.

It is not an unprimeable number, because it can be changed into a prime (140312449) 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, 34984 + ... + 38787.

It is an arithmetic number, because the mean of its divisors is an integer number (17594622).

Almost surely, 2^140312442 is an apocalyptic number.

140312442 is an abundant number, since it is smaller than the sum of its proper divisors (141201510).

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

140312442 is a wasteful number, since it uses less digits than its factorization.

140312442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74093.

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

The square root of 140312442 is about 11845.3552922654. The cubic root of 140312442 is about 519.6353977690.

Adding to 140312442 its reverse (244213041), we get a palindrome (384525483).

The spelling of 140312442 in words is "one hundred forty million, three hundred twelve thousand, four hundred forty-two".