233142140 has 48 divisors (see below), whose sum is σ = 610412544. Its totient is φ = 72667200.

The previous prime is 233142127. The next prime is 233142163. The reversal of 233142140 is 41241332.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74156 + ... + 77235.

It is an arithmetic number, because the mean of its divisors is an integer number (12716928).

Almost surely, 2^233142140 is an apocalyptic number.

233142140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233142140 is an abundant number, since it is smaller than the sum of its proper divisors (377270404).

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

233142140 is a wasteful number, since it uses less digits than its factorization.

233142140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151418 (or 151416 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 233142140 is about 15268.9927631131. The cubic root of 233142140 is about 615.4700528732.

Adding to 233142140 its reverse (41241332), we get a palindrome (274383472).

The spelling of 233142140 in words is "two hundred thirty-three million, one hundred forty-two thousand, one hundred forty".