126174121 has 4 divisors (see below), whose sum is σ = 126474244. Its totient is φ = 125874000.

The previous prime is 126174109. The next prime is 126174133. The reversal of 126174121 is 121471621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121471621 = 7349 ⋅16529.

It is an interprime number because it is at equal distance from previous prime (126174109) and next prime (126174133).

It can be written as a sum of positive squares in 2 ways, for example, as 23658496 + 102515625 = 4864^2 + 10125^2 .

It is a cyclic number.

It is not a de Polignac number, because 126174121 - 2⁵ = 126174089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126174101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149430 + ... + 150271.

It is an arithmetic number, because the mean of its divisors is an integer number (31618561).

Almost surely, 2^126174121 is an apocalyptic number.

It is an amenable number.

126174121 is a deficient number, since it is larger than the sum of its proper divisors (300123).

126174121 is an equidigital number, since it uses as much as digits as its factorization.

126174121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300122.

The product of its digits is 672, while the sum is 25.

The square root of 126174121 is about 11232.7254484386. The cubic root of 126174121 is about 501.5606185383.

The spelling of 126174121 in words is "one hundred twenty-six million, one hundred seventy-four thousand, one hundred twenty-one".