4170042 has 20 divisors (see below), whose sum is σ = 9344346. Its totient is φ = 1389960.

The previous prime is 4170041. The next prime is 4170053. The reversal of 4170042 is 2400714.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3207681 + 962361 = 1791^2 + 981^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 4169997 and 4170024.

It is not an unprimeable number, because it can be changed into a prime (4170041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12709 + ... + 13032.

Almost surely, 2^4170042 is an apocalyptic number.

4170042 is an abundant number, since it is smaller than the sum of its proper divisors (5174304).

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

4170042 is a wasteful number, since it uses less digits than its factorization.

4170042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25755 (or 25746 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 4170042 is about 2042.0680693846. The cubic root of 4170042 is about 160.9583370199.

Adding to 4170042 its reverse (2400714), we get a palindrome (6570756).

The spelling of 4170042 in words is "four million, one hundred seventy thousand, forty-two".