142147620 has 36 divisors (see below), whose sum is σ = 431181660. Its totient is φ = 37905984.

The previous prime is 142147601. The next prime is 142147631. The reversal of 142147620 is 26741241.

142147620 is a `hidden beast` number, since 14 + 21 + 4 + 7 + 620 = 666.

142147620 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 21455424 + 120692196 = 4632^2 + 10986^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 394675 + ... + 395034.

Almost surely, 2^142147620 is an apocalyptic number.

142147620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142147620 is an abundant number, since it is smaller than the sum of its proper divisors (289034040).

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

142147620 is a wasteful number, since it uses less digits than its factorization.

142147620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789724 (or 789719 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 142147620 is about 11922.5676764697. The cubic root of 142147620 is about 521.8910681225.

Adding to 142147620 its reverse (26741241), we get a palindrome (168888861).

The spelling of 142147620 in words is "one hundred forty-two million, one hundred forty-seven thousand, six hundred twenty".