142440997187 has 8 divisors (see below), whose sum is σ = 147082048512. Its totient is φ = 137802832200.

The previous prime is 142440997169. The next prime is 142440997207. The reversal of 142440997187 is 781799044241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142440997187 - 2¹⁰ = 142440996163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142440997087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621053 + ... + 818894.

It is an arithmetic number, because the mean of its divisors is an integer number (18385256064).

Almost surely, 2^142440997187 is an apocalyptic number.

142440997187 is a deficient number, since it is larger than the sum of its proper divisors (4641051325).

142440997187 is a wasteful number, since it uses less digits than its factorization.

142440997187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443169.

The product of its (nonzero) digits is 4064256, while the sum is 56.

The spelling of 142440997187 in words is "one hundred forty-two billion, four hundred forty million, nine hundred ninety-seven thousand, one hundred eighty-seven".