42042142 has 8 divisors (see below), whose sum is σ = 63199656. Its totient is φ = 20975592.

The previous prime is 42042109. The next prime is 42042151. The reversal of 42042142 is 24124024.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21573 + ... + 23440.

It is an arithmetic number, because the mean of its divisors is an integer number (7899957).

Almost surely, 2^42042142 is an apocalyptic number.

42042142 is a deficient number, since it is larger than the sum of its proper divisors (21157514).

42042142 is a wasteful number, since it uses less digits than its factorization.

42042142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45482.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 42042142 is about 6483.9912091242. The cubic root of 42042142 is about 347.7188849237.

Adding to 42042142 its reverse (24124024), we get a palindrome (66166166).

The spelling of 42042142 in words is "forty-two million, forty-two thousand, one hundred forty-two".