1042758820 has 48 divisors (see below), whose sum is σ = 2292530688. Its totient is φ = 397654400.

The previous prime is 1042758697. The next prime is 1042758833. The reversal of 1042758820 is 288572401.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1042758820.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142245 + ... + 149395.

It is an arithmetic number, because the mean of its divisors is an integer number (47761056).

Almost surely, 2^1042758820 is an apocalyptic number.

1042758820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1042758820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1146265344).

1042758820 is an abundant number, since it is smaller than the sum of its proper divisors (1249771868).

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

1042758820 is a wasteful number, since it uses less digits than its factorization.

1042758820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7500 (or 7498 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 1042758820 is about 32291.7763525019. The cubic root of 1042758820 is about 1014.0544860348.

The spelling of 1042758820 in words is "one billion, forty-two million, seven hundred fifty-eight thousand, eight hundred twenty".