42069890999 has 2 divisors, whose sum is σ = 42069891000. Its totient is φ = 42069890998.

The previous prime is 42069890977. The next prime is 42069891047. The reversal of 42069890999 is 99909896024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42069890999 - 2²⁴ = 42053113783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42069890909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21034945499 + 21034945500.

It is an arithmetic number, because the mean of its divisors is an integer number (21034945500).

Almost surely, 2^42069890999 is an apocalyptic number.

42069890999 is a deficient number, since it is larger than the sum of its proper divisors (1).

42069890999 is an equidigital number, since it uses as much as digits as its factorization.

42069890999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22674816, while the sum is 65.

The spelling of 42069890999 in words is "forty-two billion, sixty-nine million, eight hundred ninety thousand, nine hundred ninety-nine".