126130439 has 4 divisors (see below), whose sum is σ = 126163656. Its totient is φ = 126097224.

The previous prime is 126130427. The next prime is 126130457. The reversal of 126130439 is 934031621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934031621 = 19 ⋅49159559.

It is a cyclic number.

It is not a de Polignac number, because 126130439 - 2¹⁶ = 126064903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126130489) 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, 10049 + ... + 18794.

It is an arithmetic number, because the mean of its divisors is an integer number (31540914).

Almost surely, 2^126130439 is an apocalyptic number.

126130439 is a deficient number, since it is larger than the sum of its proper divisors (33217).

126130439 is an equidigital number, since it uses as much as digits as its factorization.

126130439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33216.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 126130439 is about 11230.7808722279. The cubic root of 126130439 is about 501.5027310740.

The spelling of 126130439 in words is "one hundred twenty-six million, one hundred thirty thousand, four hundred thirty-nine".