142450504987 has 6 divisors (see below), whose sum is σ = 165707730348. Its totient is φ = 122100432804.

The previous prime is 142450504921. The next prime is 142450504993. The reversal of 142450504987 is 789405054241.

It is a de Polignac number, because none of the positive numbers 2^k-142450504987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 2907153163 = 142450504987 / (1 + 4 + 2 + 4 + 5 + 0 + 5 + 0 + 4 + 9 + 8 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142450504987.

It is not an unprimeable number, because it can be changed into a prime (142450504787) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1453576533 + ... + 1453576630.

It is an arithmetic number, because the mean of its divisors is an integer number (27617955058).

Almost surely, 2^142450504987 is an apocalyptic number.

142450504987 is a deficient number, since it is larger than the sum of its proper divisors (23257225361).

142450504987 is an equidigital number, since it uses as much as digits as its factorization.

142450504987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907153177 (or 2907153170 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 142450504987 in words is "one hundred forty-two billion, four hundred fifty million, five hundred four thousand, nine hundred eighty-seven".