40023334021 has 16 divisors (see below), whose sum is σ = 45092722176. Its totient is φ = 35193600000.

The previous prime is 40023334019. The next prime is 40023334037. The reversal of 40023334021 is 12043332004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40023334021 - 2¹ = 40023334019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40023333983 and 40023334001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40023334051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 681421 + ... + 737821.

It is an arithmetic number, because the mean of its divisors is an integer number (2818295136).

Almost surely, 2^40023334021 is an apocalyptic number.

It is an amenable number.

40023334021 is a deficient number, since it is larger than the sum of its proper divisors (5069388155).

40023334021 is a wasteful number, since it uses less digits than its factorization.

40023334021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58524.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 40023334021 its reverse (12043332004), we get a palindrome (52066666025).

The spelling of 40023334021 in words is "forty billion, twenty-three million, three hundred thirty-four thousand, twenty-one".