42012423379 has 2 divisors, whose sum is σ = 42012423380. Its totient is φ = 42012423378.

The previous prime is 42012423371. The next prime is 42012423413. The reversal of 42012423379 is 97332421024.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42012423379 - 2³ = 42012423371 is a prime.

It is not a weakly prime, because it can be changed into another prime (42012423371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21006211689 + 21006211690.

It is an arithmetic number, because the mean of its divisors is an integer number (21006211690).

Almost surely, 2^42012423379 is an apocalyptic number.

42012423379 is a deficient number, since it is larger than the sum of its proper divisors (1).

42012423379 is an equidigital number, since it uses as much as digits as its factorization.

42012423379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 42012423379 in words is "forty-two billion, twelve million, four hundred twenty-three thousand, three hundred seventy-nine".