1142102143440 has 120 divisors (see below), whose sum is σ = 3929110036488. Its totient is φ = 297132257280.

The previous prime is 1142102143439. The next prime is 1142102143447. The reversal of 1142102143440 is 443412012411.

1142102143440 is a `hidden beast` number, since 1 + 1 + 4 + 2 + 1 + 0 + 214 + 3 + 440 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 108496454544 + 1033605688896 = 329388^2 + 1016664^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142102143447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19315029 + ... + 19374068.

Almost surely, 2^{1142102143440} is an apocalyptic number.

1142102143440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142102143440 is an abundant number, since it is smaller than the sum of its proper divisors (2787007893048).

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

1142102143440 is a wasteful number, since it uses less digits than its factorization.

1142102143440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38689157 (or 38689148 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 1142102143440 its reverse (443412012411), we get a palindrome (1585514155851).

The spelling of 1142102143440 in words is "one trillion, one hundred forty-two billion, one hundred two million, one hundred forty-three thousand, four hundred forty".