42006042031 has 2 divisors, whose sum is σ = 42006042032. Its totient is φ = 42006042030.

The previous prime is 42006041989. The next prime is 42006042047. The reversal of 42006042031 is 13024060024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42006042031 - 2³⁵ = 7646303663 is a prime.

It is a super-2 number, since 2×42006042031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42006041993 and 42006042011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42006046031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21003021015 + 21003021016.

It is an arithmetic number, because the mean of its divisors is an integer number (21003021016).

Almost surely, 2^42006042031 is an apocalyptic number.

42006042031 is a deficient number, since it is larger than the sum of its proper divisors (1).

42006042031 is an equidigital number, since it uses as much as digits as its factorization.

42006042031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The spelling of 42006042031 in words is "forty-two billion, six million, forty-two thousand, thirty-one".