142243776 has 140 divisors (see below), whose sum is σ = 440356752. Its totient is φ = 45315072.

The previous prime is 142243769. The next prime is 142243831. The reversal of 142243776 is 677342241.

142243776 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 142243776.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 118636 + ... + 119828.

Almost surely, 2^142243776 is an apocalyptic number.

142243776 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 142243776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220178376).

142243776 is an abundant number, since it is smaller than the sum of its proper divisors (298112976).

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

142243776 is a wasteful number, since it uses less digits than its factorization.

142243776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240 (or 1221 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 142243776 is about 11926.5995153690. The cubic root of 142243776 is about 522.0087196324.

The spelling of 142243776 in words is "one hundred forty-two million, two hundred forty-three thousand, seven hundred seventy-six".