42122999 has 2 divisors, whose sum is σ = 42123000. Its totient is φ = 42122998.

The previous prime is 42122989. The next prime is 42123013. The reversal of 42122999 is 99922124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42122999 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42122939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21061499 + 21061500.

It is an arithmetic number, because the mean of its divisors is an integer number (21061500).

Almost surely, 2^42122999 is an apocalyptic number.

42122999 is a deficient number, since it is larger than the sum of its proper divisors (1).

42122999 is an equidigital number, since it uses as much as digits as its factorization.

42122999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 42122999 is about 6490.2233397627. The cubic root of 42122999 is about 347.9416574365.

The spelling of 42122999 in words is "forty-two million, one hundred twenty-two thousand, nine hundred ninety-nine".