1020404144 has 40 divisors (see below), whose sum is σ = 1993049520. Its totient is φ = 506089728.

The previous prime is 1020404113. The next prime is 1020404191. The reversal of 1020404144 is 4414040201.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1438862 + ... + 1439570.

It is an arithmetic number, because the mean of its divisors is an integer number (49826238).

Almost surely, 2^1020404144 is an apocalyptic number.

It is an amenable number.

1020404144 is a deficient number, since it is larger than the sum of its proper divisors (972645376).

1020404144 is a wasteful number, since it uses less digits than its factorization.

1020404144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317 (or 1311 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1020404144 is about 31943.7653384819. The cubic root of 1020404144 is about 1006.7556398902.

Adding to 1020404144 its reverse (4414040201), we get a palindrome (5434444345).

The spelling of 1020404144 in words is "one billion, twenty million, four hundred four thousand, one hundred forty-four".