126121441 has 4 divisors (see below), whose sum is σ = 126687232. Its totient is φ = 125555652.

The previous prime is 126121417. The next prime is 126121459. The reversal of 126121441 is 144121621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 144121621 = 7 ⋅20588803.

It is a cyclic number.

It is not a de Polignac number, because 126121441 - 2⁷ = 126121313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126121481) 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, 282561 + ... + 283006.

It is an arithmetic number, because the mean of its divisors is an integer number (31671808).

Almost surely, 2^126121441 is an apocalyptic number.

It is an amenable number.

126121441 is a deficient number, since it is larger than the sum of its proper divisors (565791).

126121441 is an equidigital number, since it uses as much as digits as its factorization.

126121441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565790.

The product of its digits is 384, while the sum is 22.

The square root of 126121441 is about 11230.3802696080. The cubic root of 126121441 is about 501.4908052483.

The spelling of 126121441 in words is "one hundred twenty-six million, one hundred twenty-one thousand, four hundred forty-one".