40400140125 has 32 divisors (see below), whose sum is σ = 67239529344. Its totient is φ = 21542352000.

The previous prime is 40400140061. The next prime is 40400140133. The reversal of 40400140125 is 52104100404.

It is a happy number.

It is not a de Polignac number, because 40400140125 - 2⁶ = 40400140061 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2771857 + ... + 2786393.

It is an arithmetic number, because the mean of its divisors is an integer number (2101235292).

Almost surely, 2^40400140125 is an apocalyptic number.

It is an amenable number.

40400140125 is a deficient number, since it is larger than the sum of its proper divisors (26839389219).

40400140125 is a wasteful number, since it uses less digits than its factorization.

40400140125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21966 (or 21956 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 40400140125 its reverse (52104100404), we get a palindrome (92504240529).

The spelling of 40400140125 in words is "forty billion, four hundred million, one hundred forty thousand, one hundred twenty-five".