42145000979 has 2 divisors, whose sum is σ = 42145000980. Its totient is φ = 42145000978.

The previous prime is 42145000949. The next prime is 42145001011. The reversal of 42145000979 is 97900054124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42145000979 is a prime.

It is a super-2 number, since 2×42145000979² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42145000939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21072500489 + 21072500490.

It is an arithmetic number, because the mean of its divisors is an integer number (21072500490).

Almost surely, 2^42145000979 is an apocalyptic number.

42145000979 is a deficient number, since it is larger than the sum of its proper divisors (1).

42145000979 is an equidigital number, since it uses as much as digits as its factorization.

42145000979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 42145000979 in words is "forty-two billion, one hundred forty-five million, nine hundred seventy-nine", and thus it is an aban number.