142217072 has 40 divisors (see below), whose sum is σ = 279624960. Its totient is φ = 70065920.

The previous prime is 142217059. The next prime is 142217077. The reversal of 142217072 is 270712241.

142217072 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142217077) 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 7 ways as a sum of consecutive naturals, for example, 528554 + ... + 528822.

It is an arithmetic number, because the mean of its divisors is an integer number (6990624).

Almost surely, 2^142217072 is an apocalyptic number.

It is an amenable number.

142217072 is a deficient number, since it is larger than the sum of its proper divisors (137407888).

142217072 is a wasteful number, since it uses less digits than its factorization.

142217072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 142217072 is about 11925.4799484130. The cubic root of 142217072 is about 521.9760513178.

The spelling of 142217072 in words is "one hundred forty-two million, two hundred seventeen thousand, seventy-two".