2126400839 has 2 divisors, whose sum is σ = 2126400840. Its totient is φ = 2126400838.

The previous prime is 2126400833. The next prime is 2126400877. The reversal of 2126400839 is 9380046212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2126400839 - 2⁴ = 2126400823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2126400799 and 2126400808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2126400833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063200419 + 1063200420.

It is an arithmetic number, because the mean of its divisors is an integer number (1063200420).

Almost surely, 2^2126400839 is an apocalyptic number.

2126400839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126400839 is an equidigital number, since it uses as much as digits as its factorization.

2126400839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 2126400839 is about 46112.9140154903. The cubic root of 2126400839 is about 1285.9232392767.

The spelling of 2126400839 in words is "two billion, one hundred twenty-six million, four hundred thousand, eight hundred thirty-nine".