40125730 has 8 divisors (see below), whose sum is σ = 72226332. Its totient is φ = 16050288.

The previous prime is 40125727. The next prime is 40125773. The reversal of 40125730 is 3752104.

It can be written as a sum of positive squares in 2 ways, for example, as 34351321 + 5774409 = 5861^2 + 2403^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40125730² = 3220148416065800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2006277 + ... + 2006296.

Almost surely, 2^40125730 is an apocalyptic number.

40125730 is a deficient number, since it is larger than the sum of its proper divisors (32100602).

40125730 is a wasteful number, since it uses less digits than its factorization.

40125730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4012580.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 40125730 is about 6334.4873510017. The cubic root of 40125730 is about 342.3531400137.

Adding to 40125730 its reverse (3752104), we get a palindrome (43877834).

The spelling of 40125730 in words is "forty million, one hundred twenty-five thousand, seven hundred thirty".