1044140220 has 60 divisors (see below), whose sum is σ = 3275511624. Its totient is φ = 278436960.

The previous prime is 1044140213. The next prime is 1044140239. The reversal of 1044140220 is 220414401.

1044140220 is a `hidden beast` number, since 1 + 0 + 441 + 4 + 0 + 220 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1044140193 and 1044140202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 320646 + ... + 323885.

Almost surely, 2^1044140220 is an apocalyptic number.

1044140220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1044140220 is an abundant number, since it is smaller than the sum of its proper divisors (2231371404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1044140220 is a wasteful number, since it uses less digits than its factorization.

1044140220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644552 (or 644541 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1044140220 is about 32313.1586199802. The cubic root of 1044140220 is about 1014.5020797052.

Adding to 1044140220 its reverse (220414401), we get a palindrome (1264554621).

The spelling of 1044140220 in words is "one billion, forty-four million, one hundred forty thousand, two hundred twenty".