142217658 has 24 divisors (see below), whose sum is σ = 336151296. Its totient is φ = 43096200.

The previous prime is 142217633. The next prime is 142217681. The reversal of 142217658 is 856712241.

142217658 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 358938 + ... + 359333.

It is an arithmetic number, because the mean of its divisors is an integer number (14006304).

Almost surely, 2^142217658 is an apocalyptic number.

142217658 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

142217658 is an abundant number, since it is smaller than the sum of its proper divisors (193933638).

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

142217658 is a wasteful number, since it uses less digits than its factorization.

142217658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718290 (or 718287 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 142217658 is about 11925.5045176294. The cubic root of 142217658 is about 521.9767682443.

Adding to 142217658 its reverse (856712241), we get a palindrome (998929899).

The spelling of 142217658 in words is "one hundred forty-two million, two hundred seventeen thousand, six hundred fifty-eight".