140343242 has 16 divisors (see below), whose sum is σ = 228158952. Its totient is φ = 64359360.

The previous prime is 140343239. The next prime is 140343323. The reversal of 140343242 is 242343041.

It can be written as a sum of positive squares in 4 ways, for example, as 50112241 + 90231001 = 7079^2 + 9499^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13109 + ... + 21272.

Almost surely, 2^140343242 is an apocalyptic number.

140343242 is a deficient number, since it is larger than the sum of its proper divisors (87815710).

140343242 is a wasteful number, since it uses less digits than its factorization.

140343242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34553.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 140343242 is about 11846.6553085671. The cubic root of 140343242 is about 519.6734167289.

Adding to 140343242 its reverse (242343041), we get a palindrome (382686283).

The spelling of 140343242 in words is "one hundred forty million, three hundred forty-three thousand, two hundred forty-two".