42142242 has 16 divisors (see below), whose sum is σ = 84477600. Its totient is φ = 14015232.

The previous prime is 42142241. The next prime is 42142253. The reversal of 42142242 is 24224124.

It is not an unprimeable number, because it can be changed into a prime (42142241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5128 + ... + 10515.

It is an arithmetic number, because the mean of its divisors is an integer number (5279850).

Almost surely, 2^42142242 is an apocalyptic number.

42142242 is an abundant number, since it is smaller than the sum of its proper divisors (42335358).

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

42142242 is a wasteful number, since it uses less digits than its factorization.

42142242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16097.

The product of its digits is 1024, while the sum is 21.

The square root of 42142242 is about 6491.7056310341. The cubic root of 42142242 is about 347.9946326296.

Adding to 42142242 its reverse (24224124), we get a palindrome (66366366).

The spelling of 42142242 in words is "forty-two million, one hundred forty-two thousand, two hundred forty-two".