6420124759 has 2 divisors, whose sum is σ = 6420124760. Its totient is φ = 6420124758.

The previous prime is 6420124723. The next prime is 6420124807. The reversal of 6420124759 is 9574210246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6420124759 - 2¹⁵ = 6420091991 is a prime.

It is a super-2 number, since 2×6420124759² = 82436003842249616162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6420124259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3210062379 + 3210062380.

It is an arithmetic number, because the mean of its divisors is an integer number (3210062380).

Almost surely, 2^6420124759 is an apocalyptic number.

6420124759 is a deficient number, since it is larger than the sum of its proper divisors (1).

6420124759 is an equidigital number, since it uses as much as digits as its factorization.

6420124759 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 6420124759 is about 80125.6810205068. The cubic root of 6420124759 is about 1858.5795567241.

The spelling of 6420124759 in words is "six billion, four hundred twenty million, one hundred twenty-four thousand, seven hundred fifty-nine".