126798739 has 4 divisors (see below), whose sum is σ = 127139056. Its totient is φ = 126458424.

The previous prime is 126798731. The next prime is 126798751. The reversal of 126798739 is 937897621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126798739 - 2³ = 126798731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126798731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169599 + ... + 170344.

It is an arithmetic number, because the mean of its divisors is an integer number (31784764).

Almost surely, 2^126798739 is an apocalyptic number.

126798739 is a deficient number, since it is larger than the sum of its proper divisors (340317).

126798739 is an equidigital number, since it uses as much as digits as its factorization.

126798739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340316.

The product of its digits is 1143072, while the sum is 52.

The square root of 126798739 is about 11260.4946161348. The cubic root of 126798739 is about 502.3869058952.

The spelling of 126798739 in words is "one hundred twenty-six million, seven hundred ninety-eight thousand, seven hundred thirty-nine".