188142020 has 24 divisors (see below), whose sum is σ = 431016768. Its totient is φ = 68415200.

The previous prime is 188142013. The next prime is 188142023. The reversal of 188142020 is 20241881.

188142020 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (188142023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427376 + ... + 427815.

It is an arithmetic number, because the mean of its divisors is an integer number (17959032).

Almost surely, 2^188142020 is an apocalyptic number.

188142020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188142020 is an abundant number, since it is smaller than the sum of its proper divisors (242874748).

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

188142020 is a wasteful number, since it uses less digits than its factorization.

188142020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855211 (or 855209 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 188142020 is about 13716.4871596193. The cubic root of 188142020 is about 573.0096476806.

The spelling of 188142020 in words is "one hundred eighty-eight million, one hundred forty-two thousand, twenty".