421042204031 has 2 divisors, whose sum is σ = 421042204032. Its totient is φ = 421042204030.

The previous prime is 421042204001. The next prime is 421042204043. The reversal of 421042204031 is 130402240124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421042204031 is a prime.

It is a super-2 number, since 2×421042204031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421042203988 and 421042204006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421042204001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210521102015 + 210521102016.

It is an arithmetic number, because the mean of its divisors is an integer number (210521102016).

Almost surely, 2^421042204031 is an apocalyptic number.

421042204031 is a deficient number, since it is larger than the sum of its proper divisors (1).

421042204031 is an equidigital number, since it uses as much as digits as its factorization.

421042204031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 421042204031 its reverse (130402240124), we get a palindrome (551444444155).

The spelling of 421042204031 in words is "four hundred twenty-one billion, forty-two million, two hundred four thousand, thirty-one".