142255188 has 36 divisors (see below), whose sum is σ = 361894260. Its totient is φ = 47114496.

The previous prime is 142255177. The next prime is 142255189. The reversal of 142255188 is 881552241.

142255188 is a `hidden beast` number, since 1 + 4 + 22 + 551 + 88 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 37970244 + 104284944 = 6162^2 + 10212^2 .

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142255189) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6933 + ... + 18236.

Almost surely, 2^142255188 is an apocalyptic number.

142255188 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

142255188 is an abundant number, since it is smaller than the sum of its proper divisors (219639072).

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

142255188 is a wasteful number, since it uses less digits than its factorization.

142255188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25336 (or 25331 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 142255188 is about 11927.0779321676. The cubic root of 142255188 is about 522.0226792454.

The spelling of 142255188 in words is "one hundred forty-two million, two hundred fifty-five thousand, one hundred eighty-eight".