40512371 has 2 divisors, whose sum is σ = 40512372. Its totient is φ = 40512370.

The previous prime is 40512349. The next prime is 40512397. The reversal of 40512371 is 17321504.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40512371 is a prime.

It is not a weakly prime, because it can be changed into another prime (40512301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20256185 + 20256186.

It is an arithmetic number, because the mean of its divisors is an integer number (20256186).

Almost surely, 2^40512371 is an apocalyptic number.

40512371 is a deficient number, since it is larger than the sum of its proper divisors (1).

40512371 is an equidigital number, since it uses as much as digits as its factorization.

40512371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 40512371 is about 6364.9329140220. The cubic root of 40512371 is about 343.4492352802.

Adding to 40512371 its reverse (17321504), we get a palindrome (57833875).

The spelling of 40512371 in words is "forty million, five hundred twelve thousand, three hundred seventy-one".