126936905 has 4 divisors (see below), whose sum is σ = 152324292. Its totient is φ = 101549520.

The previous prime is 126936893. The next prime is 126936911. The reversal of 126936905 is 509639621.

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

It can be written as a sum of positive squares in 2 ways, for example, as 97081609 + 29855296 = 9853^2 + 5464^2 .

It is not a de Polignac number, because 126936905 - 2⁴ = 126936889 is a prime.

It is a super-2 number, since 2×126936905² = 32225955701958050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12693686 + ... + 12693695.

It is an arithmetic number, because the mean of its divisors is an integer number (38081073).

Almost surely, 2^126936905 is an apocalyptic number.

It is an amenable number.

126936905 is a deficient number, since it is larger than the sum of its proper divisors (25387387).

126936905 is an equidigital number, since it uses as much as digits as its factorization.

126936905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25387386.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 126936905 is about 11266.6279338585. The cubic root of 126936905 is about 502.5693146300.

The spelling of 126936905 in words is "one hundred twenty-six million, nine hundred thirty-six thousand, nine hundred five".