42171102 has 12 divisors (see below), whose sum is σ = 91370760. Its totient is φ = 14057028.

The previous prime is 42171097. The next prime is 42171113. The reversal of 42171102 is 20117124.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 2342839 = 42171102 / (4 + 2 + 1 + 7 + 1 + 1 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1171402 + ... + 1171437.

It is an arithmetic number, because the mean of its divisors is an integer number (7614230).

Almost surely, 2^42171102 is an apocalyptic number.

42171102 is an abundant number, since it is smaller than the sum of its proper divisors (49199658).

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

42171102 is a wasteful number, since it uses less digits than its factorization.

42171102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2342847 (or 2342844 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 42171102 is about 6493.9280870672. The cubic root of 42171102 is about 348.0740528099.

Adding to 42171102 its reverse (20117124), we get a palindrome (62288226).

The spelling of 42171102 in words is "forty-two million, one hundred seventy-one thousand, one hundred two".