40002543124 has 24 divisors (see below), whose sum is σ = 74128497408. Its totient is φ = 18823167360.

The previous prime is 40002543079. The next prime is 40002543149. The reversal of 40002543124 is 42134520004.

It is a happy number.

It is a congruent 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, 1491069 + ... + 1517659.

It is an arithmetic number, because the mean of its divisors is an integer number (3088687392).

Almost surely, 2^40002543124 is an apocalyptic number.

It is an amenable number.

40002543124 is a deficient number, since it is larger than the sum of its proper divisors (34125954284).

40002543124 is a wasteful number, since it uses less digits than its factorization.

40002543124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48735 (or 48733 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The spelling of 40002543124 in words is "forty billion, two million, five hundred forty-three thousand, one hundred twenty-four".