126926109 has 20 divisors (see below), whose sum is σ = 190323804. Its totient is φ = 84297024.

The previous prime is 126926101. The next prime is 126926113. The reversal of 126926109 is 901629621.

It can be written as a sum of positive squares in 2 ways, for example, as 16990884 + 109935225 = 4122^2 + 10485^2 .

It is not a de Polignac number, because 126926109 - 2³ = 126926101 is a prime.

It is a super-2 number, since 2×126926109² = 32220474291759762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126926101) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19609 + ... + 25265.

Almost surely, 2^126926109 is an apocalyptic number.

It is an amenable number.

126926109 is a deficient number, since it is larger than the sum of its proper divisors (63397695).

126926109 is an equidigital number, since it uses as much as digits as its factorization.

126926109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5946 (or 5937 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 126926109 is about 11266.1488095977. The cubic root of 126926109 is about 502.5550663645. Note that the first 3 decimals are identical.

The spelling of 126926109 in words is "one hundred twenty-six million, nine hundred twenty-six thousand, one hundred nine".