1142259811880 has 128 divisors (see below), whose sum is σ = 2972751425280. Its totient is φ = 390394245120.

The previous prime is 1142259811843. The next prime is 1142259811951. The reversal of 1142259811880 is 881189522411.

It is a happy number.

It is a super-2 number, since 2×1142259811880² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5332934 + ... + 5542986.

It is an arithmetic number, because the mean of its divisors is an integer number (23224620510).

Almost surely, 2^{1142259811880} is an apocalyptic number.

1142259811880 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 1142259811880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1486375712640).

1142259811880 is an abundant number, since it is smaller than the sum of its proper divisors (1830491613400).

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

1142259811880 is a wasteful number, since it uses less digits than its factorization.

1142259811880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210819 (or 210815 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 50.

The spelling of 1142259811880 in words is "one trillion, one hundred forty-two billion, two hundred fifty-nine million, eight hundred eleven thousand, eight hundred eighty".