124442521 has 4 divisors (see below), whose sum is σ = 142220032. Its totient is φ = 106665012.

The previous prime is 124442497. The next prime is 124442551. The reversal of 124442521 is 125244421.

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 124442521 - 2¹⁷ = 124311449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124442551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8888745 + ... + 8888758.

It is an arithmetic number, because the mean of its divisors is an integer number (35555008).

Almost surely, 2^124442521 is an apocalyptic number.

It is an amenable number.

124442521 is a deficient number, since it is larger than the sum of its proper divisors (17777511).

124442521 is an equidigital number, since it uses as much as digits as its factorization.

124442521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17777510.

The product of its digits is 2560, while the sum is 25.

The square root of 124442521 is about 11155.3808092776. The cubic root of 124442521 is about 499.2555869150.

Adding to 124442521 its reverse (125244421), we get a palindrome (249686942).

The spelling of 124442521 in words is "one hundred twenty-four million, four hundred forty-two thousand, five hundred twenty-one".