142243620 has 48 divisors (see below), whose sum is σ = 406764288. Its totient is φ = 37123840.

The previous prime is 142243571. The next prime is 142243663. The reversal of 142243620 is 26342241.

142243620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22401 + ... + 28040.

It is an arithmetic number, because the mean of its divisors is an integer number (8474256).

Almost surely, 2^142243620 is an apocalyptic number.

142243620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142243620 is an abundant number, since it is smaller than the sum of its proper divisors (264520668).

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

142243620 is a wasteful number, since it uses less digits than its factorization.

142243620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50500 (or 50498 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 142243620 is about 11926.5929753639. The cubic root of 142243620 is about 522.0085288018.

Adding to 142243620 its reverse (26342241), we get a palindrome (168585861).

The spelling of 142243620 in words is "one hundred forty-two million, two hundred forty-three thousand, six hundred twenty".