40539130 has 16 divisors (see below), whose sum is σ = 73092744. Its totient is φ = 16188480.

The previous prime is 40539091. The next prime is 40539137. The reversal of 40539130 is 3193504.

It can be written as a sum of positive squares in 4 ways, for example, as 40538689 + 441 = 6367^2 + 21^2 .

It is a super-2 number, since 2×40539130² = 3286842122313800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40539095 and 40539104.

It is not an unprimeable number, because it can be changed into a prime (40539137) 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, 3544 + ... + 9676.

Almost surely, 2^40539130 is an apocalyptic number.

40539130 is a deficient number, since it is larger than the sum of its proper divisors (32553614).

40539130 is a wasteful number, since it uses less digits than its factorization.

40539130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6801.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 40539130 is about 6367.0346316005. The cubic root of 40539130 is about 343.5248363468.

The spelling of 40539130 in words is "forty million, five hundred thirty-nine thousand, one hundred thirty".