43142385 has 32 divisors (see below), whose sum is σ = 81099648. Its totient is φ = 19307520.

The previous prime is 43142377. The next prime is 43142389. The reversal of 43142385 is 58324134.

It is not a de Polignac number, because 43142385 - 2³ = 43142377 is a prime.

It is a super-2 number, since 2×43142385² = 3722530766976450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43142389) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7912 + ... + 12201.

It is an arithmetic number, because the mean of its divisors is an integer number (2534364).

Almost surely, 2^43142385 is an apocalyptic number.

It is an amenable number.

43142385 is a deficient number, since it is larger than the sum of its proper divisors (37957263).

43142385 is a wasteful number, since it uses less digits than its factorization.

43142385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20145.

The product of its digits is 11520, while the sum is 30.

The square root of 43142385 is about 6568.2863061837. The cubic root of 43142385 is about 350.7260709639.

The spelling of 43142385 in words is "forty-three million, one hundred forty-two thousand, three hundred eighty-five".