1442840404 has 24 divisors (see below), whose sum is σ = 2638677888. Its totient is φ = 689646720.

The previous prime is 1442840369. The next prime is 1442840407. The reversal of 1442840404 is 4040482441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442840407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81157 + ... + 97324.

It is an arithmetic number, because the mean of its divisors is an integer number (109944912).

Almost surely, 2^1442840404 is an apocalyptic number.

It is an amenable number.

1442840404 is a deficient number, since it is larger than the sum of its proper divisors (1195837484).

1442840404 is a wasteful number, since it uses less digits than its factorization.

1442840404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178575 (or 178573 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 31.

The square root of 1442840404 is about 37984.7390934833. The cubic root of 1442840404 is about 1129.9852254836.

The spelling of 1442840404 in words is "one billion, four hundred forty-two million, eight hundred forty thousand, four hundred four".