40158745 has 16 divisors (see below), whose sum is σ = 52799040. Its totient is φ = 29080000.

The previous prime is 40158739. The next prime is 40158749. The reversal of 40158745 is 54785104.

It is not a de Polignac number, because 40158745 - 2⁷ = 40158617 is a prime.

It is a super-2 number, since 2×40158745² = 3225449599950050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40158745.

It is not an unprimeable number, because it can be changed into a prime (40158749) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12351 + ... + 15259.

It is an arithmetic number, because the mean of its divisors is an integer number (3299940).

Almost surely, 2^40158745 is an apocalyptic number.

It is an amenable number.

40158745 is a deficient number, since it is larger than the sum of its proper divisors (12640295).

40158745 is a wasteful number, since it uses less digits than its factorization.

40158745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3176.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 40158745 is about 6337.0927877064. The cubic root of 40158745 is about 342.4470090465.

The spelling of 40158745 in words is "forty million, one hundred fifty-eight thousand, seven hundred forty-five".