142144380 has 144 divisors (see below), whose sum is σ = 506251200. Its totient is φ = 31601664.

The previous prime is 142144367. The next prime is 142144381. The reversal of 142144380 is 83441241.

142144380 is a `hidden beast` number, since 14 + 214 + 438 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142144381) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45096 + ... + 48144.

Almost surely, 2^142144380 is an apocalyptic number.

142144380 is a gapful number since it is divisible by the number (10) 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 142144380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253125600).

142144380 is an abundant number, since it is smaller than the sum of its proper divisors (364106820).

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

142144380 is a wasteful number, since it uses less digits than its factorization.

142144380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3108 (or 3103 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 142144380 is about 11922.4317989242. The cubic root of 142144380 is about 521.8871029022.

The spelling of 142144380 in words is "one hundred forty-two million, one hundred forty-four thousand, three hundred eighty".