124298561 has 4 divisors (see below), whose sum is σ = 128308224. Its totient is φ = 120288900.

The previous prime is 124298549. The next prime is 124298567. The reversal of 124298561 is 165892421.

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.

It is a cyclic number.

It is not a de Polignac number, because 124298561 - 2¹⁴ = 124282177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124298567) 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, 2004785 + ... + 2004846.

It is an arithmetic number, because the mean of its divisors is an integer number (32077056).

Almost surely, 2^124298561 is an apocalyptic number.

It is an amenable number.

124298561 is a deficient number, since it is larger than the sum of its proper divisors (4009663).

124298561 is an equidigital number, since it uses as much as digits as its factorization.

124298561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009662.

The product of its digits is 34560, while the sum is 38.

The square root of 124298561 is about 11148.9264505602. The cubic root of 124298561 is about 499.0629931332.

The spelling of 124298561 in words is "one hundred twenty-four million, two hundred ninety-eight thousand, five hundred sixty-one".