142120816 has 40 divisors (see below), whose sum is σ = 292508064. Its totient is φ = 66662400.

The previous prime is 142120813. The next prime is 142120829. The reversal of 142120816 is 618021241.

142120816 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142120813) 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, 108421 + ... + 109723.

Almost surely, 2^142120816 is an apocalyptic number.

142120816 is a gapful number since it is divisible by the number (16) 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 142120816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146254032).

142120816 is an abundant number, since it is smaller than the sum of its proper divisors (150387248).

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

142120816 is a wasteful number, since it uses less digits than its factorization.

142120816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729 (or 1723 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 142120816 is about 11921.4435367534. The cubic root of 142120816 is about 521.8582626781.

The spelling of 142120816 in words is "one hundred forty-two million, one hundred twenty thousand, eight hundred sixteen".