42344030639 has 2 divisors, whose sum is σ = 42344030640. Its totient is φ = 42344030638.

The previous prime is 42344030543. The next prime is 42344030647. The reversal of 42344030639 is 93603044324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42344030639 - 2⁸ = 42344030383 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42344030689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21172015319 + 21172015320.

It is an arithmetic number, because the mean of its divisors is an integer number (21172015320).

Almost surely, 2^42344030639 is an apocalyptic number.

42344030639 is a deficient number, since it is larger than the sum of its proper divisors (1).

42344030639 is an equidigital number, since it uses as much as digits as its factorization.

42344030639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 38.

The spelling of 42344030639 in words is "forty-two billion, three hundred forty-four million, thirty thousand, six hundred thirty-nine".