126273407 has 4 divisors (see below), whose sum is σ = 135986760. Its totient is φ = 116560056.

The previous prime is 126273403. The next prime is 126273409. The reversal of 126273407 is 704372621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704372621 = 59 ⋅11938519.

It is a cyclic number.

It is not a de Polignac number, because 126273407 - 2² = 126273403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126273403) 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, 4856657 + ... + 4856682.

It is an arithmetic number, because the mean of its divisors is an integer number (33996690).

Almost surely, 2^126273407 is an apocalyptic number.

126273407 is a deficient number, since it is larger than the sum of its proper divisors (9713353).

126273407 is an equidigital number, since it uses as much as digits as its factorization.

126273407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9713352.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 126273407 is about 11237.1440766771. The cubic root of 126273407 is about 501.6921428449.

The spelling of 126273407 in words is "one hundred twenty-six million, two hundred seventy-three thousand, four hundred seven".