1039145220 has 48 divisors (see below), whose sum is σ = 3232897920. Its totient is φ = 277105248.

The previous prime is 1039145201. The next prime is 1039145251. The reversal of 1039145220 is 225419301.

1039145220 is a `hidden beast` number, since 10 + 391 + 45 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 15 ways as a sum of consecutive naturals, for example, 961632 + ... + 962711.

It is an arithmetic number, because the mean of its divisors is an integer number (67352040).

Almost surely, 2^1039145220 is an apocalyptic number.

1039145220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1039145220 is an abundant number, since it is smaller than the sum of its proper divisors (2193752700).

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

1039145220 is a wasteful number, since it uses less digits than its factorization.

1039145220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924361 (or 1924353 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1039145220 is about 32235.7754676384. The cubic root of 1039145220 is about 1012.8817545357.

It can be divided in two parts, 10391 and 45220, that added together give a triangular number (55611 = T₃₃₃).

The spelling of 1039145220 in words is "one billion, thirty-nine million, one hundred forty-five thousand, two hundred twenty".