42042342 has 16 divisors (see below), whose sum is σ = 84305520. Its totient is φ = 13977312.

The previous prime is 42042331. The next prime is 42042349. The reversal of 42042342 is 24324024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42042349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6673 + ... + 11340.

It is an arithmetic number, because the mean of its divisors is an integer number (5269095).

Almost surely, 2^42042342 is an apocalyptic number.

42042342 is an abundant number, since it is smaller than the sum of its proper divisors (42263178).

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

42042342 is a wasteful number, since it uses less digits than its factorization.

42042342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18407.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 42042342 is about 6484.0066317054. The cubic root of 42042342 is about 347.7194363043.

Adding to 42042342 its reverse (24324024), we get a palindrome (66366366).

The spelling of 42042342 in words is "forty-two million, forty-two thousand, three hundred forty-two".