42442102 has 4 divisors (see below), whose sum is σ = 63663156. Its totient is φ = 21221050.

The previous prime is 42442097. The next prime is 42442129. The reversal of 42442102 is 20124424.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42442102.

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, 10610524 + ... + 10610527.

It is an arithmetic number, because the mean of its divisors is an integer number (15915789).

Almost surely, 2^42442102 is an apocalyptic number.

42442102 is a deficient number, since it is larger than the sum of its proper divisors (21221054).

42442102 is a wasteful number, since it uses less digits than its factorization.

42442102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21221053.

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

The square root of 42442102 is about 6514.7603179242. The cubic root of 42442102 is about 348.8180593696.

Adding to 42442102 its reverse (20124424), we get a palindrome (62566526).

The spelling of 42442102 in words is "forty-two million, four hundred forty-two thousand, one hundred two".