43142140 has 24 divisors (see below), whose sum is σ = 93723840. Its totient is φ = 16661568.

The previous prime is 43142123. The next prime is 43142167. The reversal of 43142140 is 4124134.

It is a super-2 number, since 2×43142140² = 3722488487559200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36612 + ... + 37771.

It is an arithmetic number, because the mean of its divisors is an integer number (3905160).

Almost surely, 2^43142140 is an apocalyptic number.

It is an amenable number.

43142140 is an abundant number, since it is smaller than the sum of its proper divisors (50581700).

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

43142140 is a wasteful number, since it uses less digits than its factorization.

43142140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74421 (or 74419 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 43142140 is about 6568.2676559349. The cubic root of 43142140 is about 350.7254070534.

Adding to 43142140 its reverse (4124134), we get a palindrome (47266274).

The spelling of 43142140 in words is "forty-three million, one hundred forty-two thousand, one hundred forty".