124042321 has 4 divisors (see below), whose sum is σ = 133584052. Its totient is φ = 114500592.

The previous prime is 124042307. The next prime is 124042333. The reversal of 124042321 is 123240421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29855296 + 94187025 = 5464^2 + 9705^2 .

It is a cyclic number.

It is not a de Polignac number, because 124042321 - 2¹³ = 124034129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124042361) 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, 4770846 + ... + 4770871.

It is an arithmetic number, because the mean of its divisors is an integer number (33396013).

Almost surely, 2^124042321 is an apocalyptic number.

It is an amenable number.

124042321 is a deficient number, since it is larger than the sum of its proper divisors (9541731).

124042321 is an equidigital number, since it uses as much as digits as its factorization.

124042321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9541730.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 124042321 is about 11137.4288325448. The cubic root of 124042321 is about 498.7198197411.

Adding to 124042321 its reverse (123240421), we get a palindrome (247282742).

The spelling of 124042321 in words is "one hundred twenty-four million, forty-two thousand, three hundred twenty-one".