142820208 has 60 divisors (see below), whose sum is σ = 400920520. Its totient is φ = 47461248.

The previous prime is 142820191. The next prime is 142820239. The reversal of 142820208 is 802028241.

It is a super-2 number, since 2×142820208² = 40795223626326528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52383 + ... + 55041.

Almost surely, 2^142820208 is an apocalyptic number.

142820208 is a gapful number since it is divisible by the number (18) 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 142820208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200460260).

142820208 is an abundant number, since it is smaller than the sum of its proper divisors (258100312).

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

142820208 is a wasteful number, since it uses less digits than its factorization.

142820208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046 (or 3037 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 142820208 is about 11950.7408975343. The cubic root of 142820208 is about 522.7129027136.

Adding to 142820208 its reverse (802028241), we get a palindrome (944848449).

The spelling of 142820208 in words is "one hundred forty-two million, eight hundred twenty thousand, two hundred eight".