1442125421 has 16 divisors (see below), whose sum is σ = 1589372928. Its totient is φ = 1297623600.

The previous prime is 1442125397. The next prime is 1442125459. The reversal of 1442125421 is 1245212441.

It is a cyclic number.

It is not a de Polignac number, because 1442125421 - 2²⁶ = 1375016557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442125721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 671876 + ... + 674018.

It is an arithmetic number, because the mean of its divisors is an integer number (99335808).

Almost surely, 2^1442125421 is an apocalyptic number.

1442125421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1442125421 is a deficient number, since it is larger than the sum of its proper divisors (147247507).

1442125421 is a wasteful number, since it uses less digits than its factorization.

1442125421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752.

The product of its digits is 2560, while the sum is 26.

The square root of 1442125421 is about 37975.3264765426. The cubic root of 1442125421 is about 1129.7985442418.

Adding to 1442125421 its reverse (1245212441), we get a palindrome (2687337862).

The spelling of 1442125421 in words is "one billion, four hundred forty-two million, one hundred twenty-five thousand, four hundred twenty-one".