124021442 has 8 divisors (see below), whose sum is σ = 187390476. Its totient is φ = 61557952.

The previous prime is 124021441. The next prime is 124021463. The reversal of 124021442 is 244120421.

It can be written as a sum of positive squares in 2 ways, for example, as 112805641 + 11215801 = 10621^2 + 3349^2 .

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

It is not an unprimeable number, because it can be changed into a prime (124021441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226043 + ... + 226590.

Almost surely, 2^124021442 is an apocalyptic number.

124021442 is a deficient number, since it is larger than the sum of its proper divisors (63369034).

124021442 is a wasteful number, since it uses less digits than its factorization.

124021442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452772.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 124021442 is about 11136.4914582646. The cubic root of 124021442 is about 498.6918364009.

Adding to 124021442 its reverse (244120421), we get a palindrome (368141863).

The spelling of 124021442 in words is "one hundred twenty-four million, twenty-one thousand, four hundred forty-two".