42431442 has 8 divisors (see below), whose sum is σ = 84862896. Its totient is φ = 14143812.

The previous prime is 42431407. The next prime is 42431447. The reversal of 42431442 is 24413424.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

42431442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (42431447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3535948 + ... + 3535959.

It is an arithmetic number, because the mean of its divisors is an integer number (10607862).

Almost surely, 2^42431442 is an apocalyptic number.

42431442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42431442 is a wasteful number, since it uses less digits than its factorization.

42431442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7071912.

The product of its digits is 3072, while the sum is 24.

The square root of 42431442 is about 6513.9421243975. The cubic root of 42431442 is about 348.7888532143.

Adding to 42431442 its reverse (24413424), we get a palindrome (66844866).

The spelling of 42431442 in words is "forty-two million, four hundred thirty-one thousand, four hundred forty-two".