124146021 has 8 divisors (see below), whose sum is σ = 165797920. Its totient is φ = 82629072.

The previous prime is 124146007. The next prime is 124146037. The reversal of 124146021 is 120641421.

It is a happy number.

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

It is not a de Polignac number, because 124146021 - 2²¹ = 122048869 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 (124146091) 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, 31570 + ... + 35283.

It is an arithmetic number, because the mean of its divisors is an integer number (20724740).

Almost surely, 2^124146021 is an apocalyptic number.

It is an amenable number.

124146021 is a deficient number, since it is larger than the sum of its proper divisors (41651899).

124146021 is an equidigital number, since it uses as much as digits as its factorization.

124146021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67475.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 124146021 is about 11142.0833330217. The cubic root of 124146021 is about 498.8587584506.

Adding to 124146021 its reverse (120641421), we get a palindrome (244787442).

The spelling of 124146021 in words is "one hundred twenty-four million, one hundred forty-six thousand, twenty-one".