42004223400031 has 4 divisors (see below), whose sum is σ = 42128865012832. Its totient is φ = 41879581787232.

The previous prime is 42004223400001. The next prime is 42004223400049. The reversal of 42004223400031 is 13000432240024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42004223400031 - 2⁹ = 42004223399519 is a prime.

It is a super-2 number, since 2×42004223400031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42004223399969 and 42004223400005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42004223400001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62320805895 + ... + 62320806568.

It is an arithmetic number, because the mean of its divisors is an integer number (10532216253208).

Almost surely, 2^{42004223400031} is an apocalyptic number.

42004223400031 is a deficient number, since it is larger than the sum of its proper divisors (124641612801).

42004223400031 is a wasteful number, since it uses less digits than its factorization.

42004223400031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124641612800.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 42004223400031 its reverse (13000432240024), we get a palindrome (55004655640055).

The spelling of 42004223400031 in words is "forty-two trillion, four billion, two hundred twenty-three million, four hundred thousand, thirty-one".