126639341 has 4 divisors (see below), whose sum is σ = 134088732. Its totient is φ = 119189952.

The previous prime is 126639323. The next prime is 126639349. The reversal of 126639341 is 143936621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 143936621 = 5651 ⋅25471.

It can be written as a sum of positive squares in 2 ways, for example, as 72675625 + 53963716 = 8525^2 + 7346^2 .

It is a cyclic number.

It is not a de Polignac number, because 126639341 - 2⁶ = 126639277 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 (126639349) 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, 3724670 + ... + 3724703.

It is an arithmetic number, because the mean of its divisors is an integer number (33522183).

Almost surely, 2^126639341 is an apocalyptic number.

It is an amenable number.

126639341 is a deficient number, since it is larger than the sum of its proper divisors (7449391).

126639341 is an equidigital number, since it uses as much as digits as its factorization.

126639341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7449390.

The product of its digits is 23328, while the sum is 35.

The square root of 126639341 is about 11253.4146373445. The cubic root of 126639341 is about 502.1763016785.

The spelling of 126639341 in words is "one hundred twenty-six million, six hundred thirty-nine thousand, three hundred forty-one".