140032402 has 4 divisors (see below), whose sum is σ = 210048606. Its totient is φ = 70016200.

The previous prime is 140032391. The next prime is 140032421. The reversal of 140032402 is 204230041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 100982401 + 39050001 = 10049^2 + 6249^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35008099 + ... + 35008102.

Almost surely, 2^140032402 is an apocalyptic number.

140032402 is a deficient number, since it is larger than the sum of its proper divisors (70016204).

140032402 is an equidigital number, since it uses as much as digits as its factorization.

140032402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70016203.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 140032402 is about 11833.5287213916. The cubic root of 140032402 is about 519.2894659508.

Adding to 140032402 its reverse (204230041), we get a palindrome (344262443).

The spelling of 140032402 in words is "one hundred forty million, thirty-two thousand, four hundred two".