42408102031 has 2 divisors, whose sum is σ = 42408102032. Its totient is φ = 42408102030.

The previous prime is 42408102017. The next prime is 42408102047. The reversal of 42408102031 is 13020180424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42408102031 - 2⁵ = 42408101999 is a prime.

It is a super-2 number, since 2×42408102031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42408101987 and 42408102005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42408102071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21204051015 + 21204051016.

It is an arithmetic number, because the mean of its divisors is an integer number (21204051016).

Almost surely, 2^42408102031 is an apocalyptic number.

42408102031 is a deficient number, since it is larger than the sum of its proper divisors (1).

42408102031 is an equidigital number, since it uses as much as digits as its factorization.

42408102031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 42408102031 its reverse (13020180424), we get a palindrome (55428282455).

The spelling of 42408102031 in words is "forty-two billion, four hundred eight million, one hundred two thousand, thirty-one".