42430923239 has 2 divisors, whose sum is σ = 42430923240. Its totient is φ = 42430923238.

The previous prime is 42430923217. The next prime is 42430923259. The reversal of 42430923239 is 93232903424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42430923239 - 2⁸ = 42430922983 is a prime.

It is a super-2 number, since 2×42430923239² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42430923196 and 42430923205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42430923259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21215461619 + 21215461620.

It is an arithmetic number, because the mean of its divisors is an integer number (21215461620).

Almost surely, 2^42430923239 is an apocalyptic number.

42430923239 is a deficient number, since it is larger than the sum of its proper divisors (1).

42430923239 is an equidigital number, since it uses as much as digits as its factorization.

42430923239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 41.

The spelling of 42430923239 in words is "forty-two billion, four hundred thirty million, nine hundred twenty-three thousand, two hundred thirty-nine".