1320140402 has 16 divisors (see below), whose sum is σ = 2291746560. Its totient is φ = 558612288.

The previous prime is 1320140347. The next prime is 1320140411. The reversal of 1320140402 is 2040410231.

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, 595703 + ... + 597914.

It is an arithmetic number, because the mean of its divisors is an integer number (143234160).

Almost surely, 2^1320140402 is an apocalyptic number.

1320140402 is a deficient number, since it is larger than the sum of its proper divisors (971606158).

1320140402 is a wasteful number, since it uses less digits than its factorization.

1320140402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193705.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1320140402 is about 36333.7364167243. The cubic root of 1320140402 is about 1097.0002019263. Note that the first 3 decimals are identical.

Adding to 1320140402 its reverse (2040410231), we get a palindrome (3360550633).

The spelling of 1320140402 in words is "one billion, three hundred twenty million, one hundred forty thousand, four hundred two".