2642139959 has 2 divisors, whose sum is σ = 2642139960. Its totient is φ = 2642139958.

The previous prime is 2642139937. The next prime is 2642139971. The reversal of 2642139959 is 9599312462.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2642139959 - 2¹² = 2642135863 is a prime.

It is a super-3 number, since 3×2642139959³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2642139359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321069979 + 1321069980.

It is an arithmetic number, because the mean of its divisors is an integer number (1321069980).

Almost surely, 2^2642139959 is an apocalyptic number.

2642139959 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642139959 is an equidigital number, since it uses as much as digits as its factorization.

2642139959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 50.

The square root of 2642139959 is about 51401.7505441206. The cubic root of 2642139959 is about 1382.4579800554.

The spelling of 2642139959 in words is "two billion, six hundred forty-two million, one hundred thirty-nine thousand, nine hundred fifty-nine".