140404402 has 16 divisors (see below), whose sum is σ = 212284800. Its totient is φ = 69645472.

The previous prime is 140404393. The next prime is 140404403. The reversal of 140404402 is 204404041.

140404402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×140404402² = 39426792201955208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140404402.

It is not an unprimeable number, because it can be changed into a prime (140404403) 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, 234099 + ... + 234697.

It is an arithmetic number, because the mean of its divisors is an integer number (13267800).

Almost surely, 2^140404402 is an apocalyptic number.

140404402 is a deficient number, since it is larger than the sum of its proper divisors (71880398).

140404402 is a wasteful number, since it uses less digits than its factorization.

140404402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 140404402 is about 11849.2363467018. The cubic root of 140404402 is about 519.7488950346.

Adding to 140404402 its reverse (204404041), we get a palindrome (344808443).

The spelling of 140404402 in words is "one hundred forty million, four hundred four thousand, four hundred two".