142216845 has 16 divisors (see below), whose sum is σ = 231405120. Its totient is φ = 74562944.

The previous prime is 142216819. The next prime is 142216847. The reversal of 142216845 is 548612241.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 142216845 - 2⁷ = 142216717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142216847) 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 15 ways as a sum of consecutive naturals, for example, 79464 + ... + 81233.

It is an arithmetic number, because the mean of its divisors is an integer number (14462820).

Almost surely, 2^142216845 is an apocalyptic number.

142216845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142216845 is a deficient number, since it is larger than the sum of its proper divisors (89188275).

142216845 is a wasteful number, since it uses less digits than its factorization.

142216845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160764.

The product of its digits is 15360, while the sum is 33.

The square root of 142216845 is about 11925.4704309725. The cubic root of 142216845 is about 521.9757736000.

The spelling of 142216845 in words is "one hundred forty-two million, two hundred sixteen thousand, eight hundred forty-five".