40140125 has 16 divisors (see below), whose sum is σ = 50302512. Its totient is φ = 31979200.

The previous prime is 40140109. The next prime is 40140161. The reversal of 40140125 is 52104104.

It can be written as a sum of positive squares in 8 ways, for example, as 36132121 + 4008004 = 6011^2 + 2002^2 .

It is not a de Polignac number, because 40140125 - 2⁴ = 40140109 is a prime.

It is a super-2 number, since 2×40140125² = 3222459270031250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39119 + ... + 40131.

It is an arithmetic number, because the mean of its divisors is an integer number (3143907).

Almost surely, 2^40140125 is an apocalyptic number.

It is an amenable number.

40140125 is a deficient number, since it is larger than the sum of its proper divisors (10162387).

40140125 is a wasteful number, since it uses less digits than its factorization.

40140125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345 (or 1335 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 40140125 is about 6335.6234894444. The cubic root of 40140125 is about 342.3940745483.

Adding to 40140125 its reverse (52104104), we get a palindrome (92244229).

The spelling of 40140125 in words is "forty million, one hundred forty thousand, one hundred twenty-five".