42101810 has 16 divisors (see below), whose sum is σ = 77068800. Its totient is φ = 16555056.

The previous prime is 42101803. The next prime is 42101821. The reversal of 42101810 is 1810124.

It is a super-2 number, since 2×42101810² = 3545124810552200, which contains 22 as substring.

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, 35090 + ... + 36269.

It is an arithmetic number, because the mean of its divisors is an integer number (4816800).

Almost surely, 2^42101810 is an apocalyptic number.

42101810 is a deficient number, since it is larger than the sum of its proper divisors (34966990).

42101810 is a wasteful number, since it uses less digits than its factorization.

42101810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71425.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 42101810 is about 6488.5907560887. The cubic root of 42101810 is about 347.8833063180.

Adding to 42101810 its reverse (1810124), we get a palindrome (43911934).

The spelling of 42101810 in words is "forty-two million, one hundred one thousand, eight hundred ten".