40130402 has 16 divisors (see below), whose sum is σ = 65216760. Its totient is φ = 18519696.

The previous prime is 40130401. The next prime is 40130429. The reversal of 40130402 is 20403104.

It can be written as a sum of positive squares in 4 ways, for example, as 4977361 + 35153041 = 2231^2 + 5929^2 .

It is a super-2 number, since 2×40130402² = 3220898329363208, which contains 22 as substring.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (40130401) 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, 173 + ... + 8960.

Almost surely, 2^40130402 is an apocalyptic number.

40130402 is a deficient number, since it is larger than the sum of its proper divisors (25086358).

40130402 is an equidigital number, since it uses as much as digits as its factorization.

40130402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9174 (or 9148 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 40130402 is about 6334.8561151774. The cubic root of 40130402 is about 342.3664266820.

Adding to 40130402 its reverse (20403104), we get a palindrome (60533506).

It can be divided in two parts, 401 and 30402, that added together give a palindrome (30803).

The spelling of 40130402 in words is "forty million, one hundred thirty thousand, four hundred two".