126225239 has 4 divisors (see below), whose sum is σ = 144257424. Its totient is φ = 108193056.

The previous prime is 126225233. The next prime is 126225247. The reversal of 126225239 is 932522621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 932522621 = 13799 ⋅67579.

It is a cyclic number.

It is not a de Polignac number, because 126225239 - 2⁴ = 126225223 is a prime.

It is a super-3 number, since 3×126225239³ (a number of 25 digits) contains 333 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 (126225233) 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, 9016082 + ... + 9016095.

It is an arithmetic number, because the mean of its divisors is an integer number (36064356).

Almost surely, 2^126225239 is an apocalyptic number.

126225239 is a deficient number, since it is larger than the sum of its proper divisors (18032185).

126225239 is an equidigital number, since it uses as much as digits as its factorization.

126225239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18032184.

The product of its digits is 12960, while the sum is 32.

The square root of 126225239 is about 11235.0006230529. Note that the first 3 decimals coincide. The cubic root of 126225239 is about 501.6283432398.

The spelling of 126225239 in words is "one hundred twenty-six million, two hundred twenty-five thousand, two hundred thirty-nine".