40240021424 has 10 divisors (see below), whose sum is σ = 77965041540. Its totient is φ = 20120010704.

The previous prime is 40240021391. The next prime is 40240021477. The reversal of 40240021424 is 42412004204.

It is a self number, because there is not a number n which added to its sum of digits gives 40240021424.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257500654 + ... + 1257500685.

It is an arithmetic number, because the mean of its divisors is an integer number (7796504154).

Almost surely, 2^40240021424 is an apocalyptic number.

It is an amenable number.

40240021424 is a deficient number, since it is larger than the sum of its proper divisors (37725020116).

40240021424 is a wasteful number, since it uses less digits than its factorization.

40240021424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515001347 (or 2515001341 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 40240021424 its reverse (42412004204), we get a palindrome (82652025628).

The spelling of 40240021424 in words is "forty billion, two hundred forty million, twenty-one thousand, four hundred twenty-four".