1442423644 has 12 divisors (see below), whose sum is σ = 2558820544. Its totient is φ = 711332064.

The previous prime is 1442423581. The next prime is 1442423669. The reversal of 1442423644 is 4463242441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2469612 + ... + 2470195.

Almost surely, 2^1442423644 is an apocalyptic number.

It is an amenable number.

1442423644 is a deficient number, since it is larger than the sum of its proper divisors (1116396900).

1442423644 is a wasteful number, since it uses less digits than its factorization.

1442423644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4939884 (or 4939882 counting only the distinct ones).

The product of its digits is 73728, while the sum is 34.

The square root of 1442423644 is about 37979.2528099224. The cubic root of 1442423644 is about 1129.8764174244.

The spelling of 1442423644 in words is "one billion, four hundred forty-two million, four hundred twenty-three thousand, six hundred forty-four".