126700709 has 4 divisors (see below), whose sum is σ = 126810816. Its totient is φ = 126590604.

The previous prime is 126700703. The next prime is 126700723. The reversal of 126700709 is 907007621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126700709 is a prime.

It is a super-2 number, since 2×126700709² = 32106139322205362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126700703) 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, 53309 + ... + 55634.

It is an arithmetic number, because the mean of its divisors is an integer number (31702704).

Almost surely, 2^126700709 is an apocalyptic number.

It is an amenable number.

126700709 is a deficient number, since it is larger than the sum of its proper divisors (110107).

126700709 is a wasteful number, since it uses less digits than its factorization.

126700709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110106.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 126700709 is about 11256.1409461680. The cubic root of 126700709 is about 502.2574049082.

The spelling of 126700709 in words is "one hundred twenty-six million, seven hundred thousand, seven hundred nine".