40130040402 has 24 divisors (see below), whose sum is σ = 87194747484. Its totient is φ = 13338783744.

The previous prime is 40130040367. The next prime is 40130040403. The reversal of 40130040402 is 20404003104.

It can be written as a sum of positive squares in 2 ways, for example, as 39767937561 + 362102841 = 199419^2 + 19029^2 .

It is a super-4 number, since 4×40130040402⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40130040403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3151503 + ... + 3164210.

Almost surely, 2^40130040402 is an apocalyptic number.

40130040402 is an abundant number, since it is smaller than the sum of its proper divisors (47064707082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40130040402 is a wasteful number, since it uses less digits than its factorization.

40130040402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6316074 (or 6316071 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 40130040402 its reverse (20404003104), we get a palindrome (60534043506).

The spelling of 40130040402 in words is "forty billion, one hundred thirty million, forty thousand, four hundred two".