1042253440000 has 220 divisors, whose sum is σ = 2624232776704. Its totient is φ = 413586432000.

The previous prime is 1042253439949. The next prime is 1042253440013. The reversal of 1042253440000 is 443522401.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 81273589 + ... + 81286411.

Almost surely, 2^{1042253440000} is an apocalyptic number.

1042253440000 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 1042253440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1312116388352).

1042253440000 is an abundant number, since it is smaller than the sum of its proper divisors (1581979336704).

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

1042253440000 is an equidigital number, since it uses as much as digits as its factorization.

1042253440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12990 (or 12957 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 1042253440000 its reverse (443522401), we get a palindrome (1042696962401).

The spelling of 1042253440000 in words is "one trillion, forty-two billion, two hundred fifty-three million, four hundred forty thousand".