40124815 has 16 divisors (see below), whose sum is σ = 49134816. Its totient is φ = 31449600.

The previous prime is 40124809. The next prime is 40124837. The reversal of 40124815 is 51842104.

It is not a de Polignac number, because 40124815 - 2⁹ = 40124303 is a prime.

It is a super-2 number, since 2×40124815² = 3220001557568450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40124815.

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 15 ways as a sum of consecutive naturals, for example, 76755 + ... + 77275.

It is an arithmetic number, because the mean of its divisors is an integer number (3070926).

Almost surely, 2^40124815 is an apocalyptic number.

40124815 is a deficient number, since it is larger than the sum of its proper divisors (9010001).

40124815 is a wasteful number, since it uses less digits than its factorization.

40124815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 40124815 is about 6334.4151269079. The cubic root of 40124815 is about 342.3505377308.

Adding to 40124815 its reverse (51842104), we get a palindrome (91966919).

The spelling of 40124815 in words is "forty million, one hundred twenty-four thousand, eight hundred fifteen".