124034021 has 4 divisors (see below), whose sum is σ = 124070700. Its totient is φ = 123997344.

The previous prime is 124034003. The next prime is 124034041. The reversal of 124034021 is 120430421.

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 104550625 + 19483396 = 10225^2 + 4414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124034021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124034041) 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, 12686 + ... + 20223.

It is an arithmetic number, because the mean of its divisors is an integer number (31017675).

Almost surely, 2^124034021 is an apocalyptic number.

It is an amenable number.

124034021 is a deficient number, since it is larger than the sum of its proper divisors (36679).

124034021 is an equidigital number, since it uses as much as digits as its factorization.

124034021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36678.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 124034021 is about 11137.0562088911. The cubic root of 124034021 is about 498.7086959386.

Adding to 124034021 its reverse (120430421), we get a palindrome (244464442).

The spelling of 124034021 in words is "one hundred twenty-four million, thirty-four thousand, twenty-one".