142218432 has 42 divisors (see below), whose sum is σ = 407645108. Its totient is φ = 47405952.

The previous prime is 142218353. The next prime is 142218443. The reversal of 142218432 is 234812241.

142218432 is a `hidden beast` number, since 1 + 4 + 221 + 8 + 432 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 7.

It is a zygodrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 142218396 and 142218405.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122878 + ... + 124029.

Almost surely, 2^142218432 is an apocalyptic number.

142218432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142218432 is an abundant number, since it is smaller than the sum of its proper divisors (265426676).

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

142218432 is a wasteful number, since it uses less digits than its factorization.

142218432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246925 (or 246912 counting only the distinct ones).

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

The square root of 142218432 is about 11925.5369690425. The cubic root of 142218432 is about 521.9777151714.

The spelling of 142218432 in words is "one hundred forty-two million, two hundred eighteen thousand, four hundred thirty-two".