142643132102440 has 32 divisors (see below), whose sum is σ = 320947407281160. Its totient is φ = 57057188832000.

The previous prime is 142643132102437. The next prime is 142643132102473. The reversal of 142643132102440 is 44201231346241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 140234906094724 + 2408226007716 = 11842082^2 + 1551846^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142643132102440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52298110 + ... + 54957970.

Almost surely, 2^{142643132102440} is an apocalyptic number.

142643132102440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142643132102440 is an abundant number, since it is smaller than the sum of its proper divisors (178304275178720).

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

142643132102440 is a wasteful number, since it uses less digits than its factorization.

142643132102440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000573 (or 4000569 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 37.

Adding to 142643132102440 its reverse (44201231346241), we get a palindrome (186844363448681).

The spelling of 142643132102440 in words is "one hundred forty-two trillion, six hundred forty-three billion, one hundred thirty-two million, one hundred two thousand, four hundred forty".