1400540402 has 16 divisors (see below), whose sum is σ = 2166321024. Its totient is φ = 678660000.

The previous prime is 1400540389. The next prime is 1400540473. The reversal of 1400540402 is 2040450041.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44174 + ... + 68937.

It is an arithmetic number, because the mean of its divisors is an integer number (135395064).

Almost surely, 2^1400540402 is an apocalyptic number.

1400540402 is a deficient number, since it is larger than the sum of its proper divisors (765780622).

1400540402 is a wasteful number, since it uses less digits than its factorization.

1400540402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113305.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1400540402 is about 37423.7945964863. The cubic root of 1400540402 is about 1118.8328620751.

Adding to 1400540402 its reverse (2040450041), we get a palindrome (3440990443).

The spelling of 1400540402 in words is "one billion, four hundred million, five hundred forty thousand, four hundred two".