142817924407890 has 32 divisors (see below), whose sum is σ = 342763682095296. Its totient is φ = 38084706118080.

The previous prime is 142817924407871. The next prime is 142817924407891. The reversal of 142817924407890 is 98704429718241.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (142817924407891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12146844 + ... + 20813016.

It is an arithmetic number, because the mean of its divisors is an integer number (10711365065478).

Almost surely, 2^{142817924407890} is an apocalyptic number.

142817924407890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142817924407890 is an abundant number, since it is smaller than the sum of its proper divisors (199945757687406).

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

142817924407890 is a wasteful number, since it uses less digits than its factorization.

142817924407890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9215514.

The product of its (nonzero) digits is 65028096, while the sum is 66.

The spelling of 142817924407890 in words is "one hundred forty-two trillion, eight hundred seventeen billion, nine hundred twenty-four million, four hundred seven thousand, eight hundred ninety".