40130440402 has 16 divisors (see below), whose sum is σ = 65420835480. Its totient is φ = 18351816192.

The previous prime is 40130440391. The next prime is 40130440487. The reversal of 40130440402 is 20404403104.

It can be written as a sum of positive squares in 4 ways, for example, as 25660515721 + 14469924681 = 160189^2 + 120291^2 .

It is a super-2 number, since 2×40130440402² (a number of 22 digits) contains 22 as substring.

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, 7077343 + ... + 7083010.

Almost surely, 2^40130440402 is an apocalyptic number.

40130440402 is a deficient number, since it is larger than the sum of its proper divisors (25290395078).

40130440402 is a wasteful number, since it uses less digits than its factorization.

40130440402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14160477.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 40130440402 its reverse (20404403104), we get a palindrome (60534843506).

The spelling of 40130440402 in words is "forty billion, one hundred thirty million, four hundred forty thousand, four hundred two".