1442205644 has 12 divisors (see below), whose sum is σ = 2753301768. Its totient is φ = 655548000.

The previous prime is 1442205643. The next prime is 1442205671. The reversal of 1442205644 is 4465022441.

It is a self number, because there is not a number n which added to its sum of digits gives 1442205644.

It is not an unprimeable number, because it can be changed into a prime (1442205643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16388657 + ... + 16388744.

It is an arithmetic number, because the mean of its divisors is an integer number (229441814).

Almost surely, 2^1442205644 is an apocalyptic number.

It is an amenable number.

1442205644 is a deficient number, since it is larger than the sum of its proper divisors (1311096124).

1442205644 is a wasteful number, since it uses less digits than its factorization.

1442205644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32777416 (or 32777414 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 1442205644 is about 37976.3827134707. The cubic root of 1442205644 is about 1129.8194934479.

The spelling of 1442205644 in words is "one billion, four hundred forty-two million, two hundred five thousand, six hundred forty-four".