1042390800 has 270 divisors, whose sum is σ = 3977796186. Its totient is φ = 252595200.

The previous prime is 1042390759. The next prime is 1042390807. The reversal of 1042390800 is 80932401.

It can be written as a sum of positive squares in 3 ways, for example, as 5035536 + 1037355264 = 2244^2 + 32208^2 .

It is not an unprimeable number, because it can be changed into a prime (1042390807) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 434404 + ... + 436796.

Almost surely, 2^1042390800 is an apocalyptic number.

1042390800 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 1042390800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1988898093).

1042390800 is an abundant number, since it is smaller than the sum of its proper divisors (2935405386).

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

1042390800 is a wasteful number, since it uses less digits than its factorization.

1042390800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2439 (or 2414 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1042390800 is about 32286.0774947964. The cubic root of 1042390800 is about 1013.9351755298.

The spelling of 1042390800 in words is "one billion, forty-two million, three hundred ninety thousand, eight hundred".