124322021 has 4 divisors (see below), whose sum is σ = 125462700. Its totient is φ = 123181344.

The previous prime is 124321973. The next prime is 124322041. The reversal of 124322021 is 120223421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120223421 = 163 ⋅737567.

It can be written as a sum of positive squares in 2 ways, for example, as 77193796 + 47128225 = 8786^2 + 6865^2 .

It is a cyclic number.

It is not a de Polignac number, because 124322021 - 2⁶ = 124321957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124322041) 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, 570176 + ... + 570393.

It is an arithmetic number, because the mean of its divisors is an integer number (31365675).

Almost surely, 2^124322021 is an apocalyptic number.

It is an amenable number.

124322021 is a deficient number, since it is larger than the sum of its proper divisors (1140679).

124322021 is a wasteful number, since it uses less digits than its factorization.

124322021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140678.

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

The square root of 124322021 is about 11149.9785201587. The cubic root of 124322021 is about 499.0943887267.

Adding to 124322021 its reverse (120223421), we get a palindrome (244545442).

The spelling of 124322021 in words is "one hundred twenty-four million, three hundred twenty-two thousand, twenty-one".