124427321 has 4 divisors (see below), whose sum is σ = 124911732. Its totient is φ = 123942912.

The previous prime is 124427311. The next prime is 124427327. The reversal of 124427321 is 123724421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123724421 = 107 ⋅1156303.

It can be written as a sum of positive squares in 2 ways, for example, as 103815721 + 20611600 = 10189^2 + 4540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124427321 is a prime.

It is a super-2 number, since 2×124427321² = 30964316422474082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124427327) 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, 241820 + ... + 242333.

It is an arithmetic number, because the mean of its divisors is an integer number (31227933).

Almost surely, 2^124427321 is an apocalyptic number.

It is an amenable number.

124427321 is a deficient number, since it is larger than the sum of its proper divisors (484411).

124427321 is an equidigital number, since it uses as much as digits as its factorization.

124427321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484410.

The product of its digits is 2688, while the sum is 26.

The square root of 124427321 is about 11154.6995029001. The cubic root of 124427321 is about 499.2352589385.

The spelling of 124427321 in words is "one hundred twenty-four million, four hundred twenty-seven thousand, three hundred twenty-one".