1044142421 has 8 divisors (see below), whose sum is σ = 1217659200. Its totient is φ = 894978924.

The previous prime is 1044142409. The next prime is 1044142439. The reversal of 1044142421 is 1242414401.

It is a de Polignac number, because none of the positive numbers 2^k-1044142421 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 (1044142441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1521731 + ... + 1522416.

It is an arithmetic number, because the mean of its divisors is an integer number (152207400).

Almost surely, 2^1044142421 is an apocalyptic number.

It is an amenable number.

1044142421 is a deficient number, since it is larger than the sum of its proper divisors (173516779).

1044142421 is an frugal number, since it uses more digits than its factorization.

1044142421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044168 (or 3044154 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 1044142421 is about 32313.1926772951. The cubic root of 1044142421 is about 1014.5027925461.

Adding to 1044142421 its reverse (1242414401), we get a palindrome (2286556822).

The spelling of 1044142421 in words is "one billion, forty-four million, one hundred forty-two thousand, four hundred twenty-one".