40081875 has 20 divisors (see below), whose sum is σ = 66784872. Its totient is φ = 21376000.

The previous prime is 40081871. The next prime is 40081883. The reversal of 40081875 is 57818004.

It is a happy number.

It is not a de Polignac number, because 40081875 - 2² = 40081871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40081871) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8814 + ... + 12563.

Almost surely, 2^40081875 is an apocalyptic number.

40081875 is a deficient number, since it is larger than the sum of its proper divisors (26702997).

40081875 is an equidigital number, since it uses as much as digits as its factorization.

40081875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21400 (or 21385 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 40081875 is about 6331.0247985614. The cubic root of 40081875 is about 342.2283707776.

Adding to 40081875 its reverse (57818004), we get a palindrome (97899879).

The spelling of 40081875 in words is "forty million, eighty-one thousand, eight hundred seventy-five".