40334424021 has 12 divisors (see below), whose sum is σ = 58277568960. Its totient is φ = 26881892520.

The previous prime is 40334423989. The next prime is 40334424071. The reversal of 40334424021 is 12042443304.

It is a happy number.

It is not a de Polignac number, because 40334424021 - 2⁵ = 40334423989 is a prime.

It is a super-2 number, since 2×40334424021² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40334424071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 610461 + ... + 673298.

It is an arithmetic number, because the mean of its divisors is an integer number (4856464080).

Almost surely, 2^40334424021 is an apocalyptic number.

It is an amenable number.

40334424021 is a deficient number, since it is larger than the sum of its proper divisors (17943144939).

40334424021 is a wasteful number, since it uses less digits than its factorization.

40334424021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287256 (or 1287253 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 40334424021 its reverse (12042443304), we get a palindrome (52376867325).

The spelling of 40334424021 in words is "forty billion, three hundred thirty-four million, four hundred twenty-four thousand, twenty-one".