42102242 has 16 divisors (see below), whose sum is σ = 77727552. Its totient is φ = 16655760.

The previous prime is 42102199. The next prime is 42102257. The reversal of 42102242 is 24220124.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42102242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115484 + ... + 115847.

It is an arithmetic number, because the mean of its divisors is an integer number (4857972).

Almost surely, 2^42102242 is an apocalyptic number.

42102242 is a deficient number, since it is larger than the sum of its proper divisors (35625310).

42102242 is a wasteful number, since it uses less digits than its factorization.

42102242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231353.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 42102242 is about 6488.6240452040. The cubic root of 42102242 is about 347.8844961724.

Adding to 42102242 its reverse (24220124), we get a palindrome (66322366).

The spelling of 42102242 in words is "forty-two million, one hundred two thousand, two hundred forty-two".