43822142 has 48 divisors (see below), whose sum is σ = 83418720. Its totient is φ = 16811712.

The previous prime is 43822139. The next prime is 43822147. The reversal of 43822142 is 24122834.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43822147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 401984 + ... + 402092.

It is an arithmetic number, because the mean of its divisors is an integer number (1737890).

Almost surely, 2^43822142 is an apocalyptic number.

43822142 is a deficient number, since it is larger than the sum of its proper divisors (39596578).

43822142 is a wasteful number, since it uses less digits than its factorization.

43822142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 178 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 43822142 is about 6619.8294539965. The cubic root of 43822142 is about 352.5585088065.

Adding to 43822142 its reverse (24122834), we get a palindrome (67944976).

The spelling of 43822142 in words is "forty-three million, eight hundred twenty-two thousand, one hundred forty-two".