42126070639 has 2 divisors, whose sum is σ = 42126070640. Its totient is φ = 42126070638.

The previous prime is 42126070633. The next prime is 42126070643. The reversal of 42126070639 is 93607062124.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42126070639 - 2⁵ = 42126070607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42126070633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21063035319 + 21063035320.

It is an arithmetic number, because the mean of its divisors is an integer number (21063035320).

Almost surely, 2^42126070639 is an apocalyptic number.

42126070639 is a deficient number, since it is larger than the sum of its proper divisors (1).

42126070639 is an equidigital number, since it uses as much as digits as its factorization.

42126070639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 42126070639 in words is "forty-two billion, one hundred twenty-six million, seventy thousand, six hundred thirty-nine".