140123242 has 12 divisors (see below), whose sum is σ = 244500930. Its totient is φ = 60052776.

The previous prime is 140123239. The next prime is 140123251. The reversal of 140123242 is 242321041.

It can be written as a sum of positive squares in only one way, i.e., 139452481 + 670761 = 11809^2 + 819^2 .

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, 714817 + ... + 715012.

Almost surely, 2^140123242 is an apocalyptic number.

140123242 is a deficient number, since it is larger than the sum of its proper divisors (104377688).

140123242 is a wasteful number, since it uses less digits than its factorization.

140123242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429845 (or 1429838 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 140123242 is about 11837.3663456024. The cubic root of 140123242 is about 519.4017305832.

Adding to 140123242 its reverse (242321041), we get a palindrome (382444283).

The spelling of 140123242 in words is "one hundred forty million, one hundred twenty-three thousand, two hundred forty-two".