42245867539 has 2 divisors, whose sum is σ = 42245867540. Its totient is φ = 42245867538.

The previous prime is 42245867513. The next prime is 42245867581. The reversal of 42245867539 is 93576854224.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42245867539 - 2²³ = 42237478931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42245867539.

It is not a weakly prime, because it can be changed into another prime (42245867639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21122933769 + 21122933770.

It is an arithmetic number, because the mean of its divisors is an integer number (21122933770).

Almost surely, 2^42245867539 is an apocalyptic number.

42245867539 is a deficient number, since it is larger than the sum of its proper divisors (1).

42245867539 is an equidigital number, since it uses as much as digits as its factorization.

42245867539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14515200, while the sum is 55.

The spelling of 42245867539 in words is "forty-two billion, two hundred forty-five million, eight hundred sixty-seven thousand, five hundred thirty-nine".