124342021 has 8 divisors (see below), whose sum is σ = 125455680. Its totient is φ = 123233088.

The previous prime is 124342013. The next prime is 124342027. The reversal of 124342021 is 120243421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 124342021 - 2³ = 124342013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124342021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124342027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69085 + ... + 70861.

It is an arithmetic number, because the mean of its divisors is an integer number (15681960).

Almost surely, 2^124342021 is an apocalyptic number.

It is an amenable number.

124342021 is a deficient number, since it is larger than the sum of its proper divisors (1113659).

124342021 is a wasteful number, since it uses less digits than its factorization.

124342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363.

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

The square root of 124342021 is about 11150.8753468057. The cubic root of 124342021 is about 499.1211508200.

Adding to 124342021 its reverse (120243421), we get a palindrome (244585442).

It can be divided in two parts, 1243 and 42021, that added together give a square (43264 = 208²).

The spelling of 124342021 in words is "one hundred twenty-four million, three hundred forty-two thousand, twenty-one".