42044542 has 4 divisors (see below), whose sum is σ = 63066816. Its totient is φ = 21022270.

The previous prime is 42044531. The next prime is 42044551. The reversal of 42044542 is 24544024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511134 + ... + 10511137.

It is an arithmetic number, because the mean of its divisors is an integer number (15766704).

Almost surely, 2^42044542 is an apocalyptic number.

42044542 is a deficient number, since it is larger than the sum of its proper divisors (21022274).

42044542 is a wasteful number, since it uses less digits than its factorization.

42044542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21022273.

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 42044542 is about 6484.1762776778. The cubic root of 42044542 is about 347.7255013757.

Adding to 42044542 its reverse (24544024), we get a palindrome (66588566).

The spelling of 42044542 in words is "forty-two million, forty-four thousand, five hundred forty-two".