142420217856 has 208 divisors, whose sum is σ = 447997636608. Its totient is φ = 39378124800.

The previous prime is 142420217843. The next prime is 142420217857. The reversal of 142420217856 is 658712024241.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (142420217857) 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, 2639791 + ... + 2693201.

Almost surely, 2^142420217856 is an apocalyptic number.

142420217856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142420217856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223998818304).

142420217856 is an abundant number, since it is smaller than the sum of its proper divisors (305577418752).

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

142420217856 is an equidigital number, since it uses as much as digits as its factorization.

142420217856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53476 (or 53454 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The spelling of 142420217856 in words is "one hundred forty-two billion, four hundred twenty million, two hundred seventeen thousand, eight hundred fifty-six".