40124929 has 4 divisors (see below), whose sum is σ = 43211476. Its totient is φ = 37038384.

The previous prime is 40124921. The next prime is 40124957. The reversal of 40124929 is 92942104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10400625 + 29724304 = 3225^2 + 5452^2 .

It is a cyclic number.

It is not a de Polignac number, because 40124929 - 2³ = 40124921 is a prime.

It is a super-2 number, since 2×40124929² = 3220019854510082, 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 40124929.

It is not an unprimeable number, because it can be changed into a prime (40124921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1543254 + ... + 1543279.

It is an arithmetic number, because the mean of its divisors is an integer number (10802869).

Almost surely, 2^40124929 is an apocalyptic number.

It is an amenable number.

40124929 is a deficient number, since it is larger than the sum of its proper divisors (3086547).

40124929 is a wasteful number, since it uses less digits than its factorization.

40124929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3086546.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 40124929 is about 6334.4241253645. The cubic root of 40124929 is about 342.3508619518.

The spelling of 40124929 in words is "forty million, one hundred twenty-four thousand, nine hundred twenty-nine".