40113242421 has 32 divisors (see below), whose sum is σ = 63127019520. Its totient is φ = 22182036096.

The previous prime is 40113242399. The next prime is 40113242459. The reversal of 40113242421 is 12424231104.

It is not a de Polignac number, because 40113242421 - 2²³ = 40104853813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40113242391 and 40113242400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40113242471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140481 + ... + 316166.

It is an arithmetic number, because the mean of its divisors is an integer number (1972719360).

Almost surely, 2^40113242421 is an apocalyptic number.

It is an amenable number.

40113242421 is a deficient number, since it is larger than the sum of its proper divisors (23013777099).

40113242421 is a wasteful number, since it uses less digits than its factorization.

40113242421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456793.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 40113242421 its reverse (12424231104), we get a palindrome (52537473525).

The spelling of 40113242421 in words is "forty billion, one hundred thirteen million, two hundred forty-two thousand, four hundred twenty-one".