126939005425 has 6 divisors (see below), whose sum is σ = 157404366758. Its totient is φ = 101551204320.

The previous prime is 126939005357. The next prime is 126939005443. The reversal of 126939005425 is 524500939621.

It can be written as a sum of positive squares in 3 ways, for example, as 13318775649 + 113620229776 = 115407^2 + 337076^2 .

It is not a de Polignac number, because 126939005425 - 2²³ = 126930616817 is a prime.

It is a super-2 number, since 2×126939005425² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2538780084 + ... + 2538780133.

Almost surely, 2^126939005425 is an apocalyptic number.

It is an amenable number.

126939005425 is a deficient number, since it is larger than the sum of its proper divisors (30465361333).

126939005425 is an equidigital number, since it uses as much as digits as its factorization.

126939005425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5077560227 (or 5077560222 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 126939005425 in words is "one hundred twenty-six billion, nine hundred thirty-nine million, five thousand, four hundred twenty-five".