40125998 has 16 divisors (see below), whose sum is σ = 66106800. Its totient is φ = 18115200.

The previous prime is 40125989. The next prime is 40126013. The reversal of 40125998 is 89952104.

It is a super-2 number, since 2×40125998² = 3220191430992008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2843 + ... + 9398.

It is an arithmetic number, because the mean of its divisors is an integer number (4131675).

Almost surely, 2^40125998 is an apocalyptic number.

40125998 is a deficient number, since it is larger than the sum of its proper divisors (25980802).

40125998 is a wasteful number, since it uses less digits than its factorization.

40125998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12403.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 40125998 is about 6334.5085050065. The cubic root of 40125998 is about 342.3539022049.

The spelling of 40125998 in words is "forty million, one hundred twenty-five thousand, nine hundred ninety-eight".