142216454 has 16 divisors (see below), whose sum is σ = 223183296. Its totient is φ = 67896000.

The previous prime is 142216447. The next prime is 142216471. The reversal of 142216454 is 454612241.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14597 + ... + 22304.

It is an arithmetic number, because the mean of its divisors is an integer number (13948956).

Almost surely, 2^142216454 is an apocalyptic number.

142216454 is a deficient number, since it is larger than the sum of its proper divisors (80966842).

142216454 is a wasteful number, since it uses less digits than its factorization.

142216454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36991.

The product of its digits is 7680, while the sum is 29.

The square root of 142216454 is about 11925.4540374780. The cubic root of 142216454 is about 521.9752952397.

Adding to 142216454 its reverse (454612241), we get a palindrome (596828695).

The spelling of 142216454 in words is "one hundred forty-two million, two hundred sixteen thousand, four hundred fifty-four".