40124785 has 8 divisors (see below), whose sum is σ = 48217896. Its totient is φ = 32054400.

The previous prime is 40124771. The next prime is 40124797. The reversal of 40124785 is 58742104.

It can be written as a sum of positive squares in 4 ways, for example, as 11992369 + 28132416 = 3463^2 + 5304^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40124785 - 2¹⁷ = 39993713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1516 + ... + 9085.

It is an arithmetic number, because the mean of its divisors is an integer number (6027237).

Almost surely, 2^40124785 is an apocalyptic number.

It is an amenable number.

40124785 is a deficient number, since it is larger than the sum of its proper divisors (8093111).

40124785 is a wasteful number, since it uses less digits than its factorization.

40124785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11363.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 40124785 is about 6334.4127588909. The cubic root of 40124785 is about 342.3504524094.

Adding to 40124785 its reverse (58742104), we get a palindrome (98866889).

The spelling of 40124785 in words is "forty million, one hundred twenty-four thousand, seven hundred eighty-five".