42949672979 has 2 divisors, whose sum is σ = 42949672980. Its totient is φ = 42949672978.

The previous prime is 42949672949. The next prime is 42949673027. The reversal of 42949672979 is 97927694924.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42949672979 - 2²⁰ = 42948624403 is a prime.

It is not a weakly prime, because it can be changed into another prime (42949672949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21474836489 + 21474836490.

It is an arithmetic number, because the mean of its divisors is an integer number (21474836490).

Almost surely, 2^42949672979 is an apocalyptic number.

42949672979 is a deficient number, since it is larger than the sum of its proper divisors (1).

42949672979 is an equidigital number, since it uses as much as digits as its factorization.

42949672979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 123451776, while the sum is 68.

The spelling of 42949672979 in words is "forty-two billion, nine hundred forty-nine million, six hundred seventy-two thousand, nine hundred seventy-nine".