42181702 has 16 divisors (see below), whose sum is σ = 66572352. Its totient is φ = 20018880.

The previous prime is 42181697. The next prime is 42181721. The reversal of 42181702 is 20718124.

It is a happy number.

It is a congruent number.

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, 3918 + ... + 9985.

It is an arithmetic number, because the mean of its divisors is an integer number (4160772).

Almost surely, 2^42181702 is an apocalyptic number.

42181702 is a deficient number, since it is larger than the sum of its proper divisors (24390650).

42181702 is a wasteful number, since it uses less digits than its factorization.

42181702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13983.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 42181702 is about 6494.7441827989. The cubic root of 42181702 is about 348.1032139787.

Adding to 42181702 its reverse (20718124), we get a palindrome (62899826).

The spelling of 42181702 in words is "forty-two million, one hundred eighty-one thousand, seven hundred two".