42106516 has 12 divisors (see below), whose sum is σ = 73834740. Its totient is φ = 21010880.

The previous prime is 42106513. The next prime is 42106541. The reversal of 42106516 is 61560124.

It can be written as a sum of positive squares in 2 ways, for example, as 18096516 + 24010000 = 4254^2 + 4900^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42106513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8305 + ... + 12376.

It is an arithmetic number, because the mean of its divisors is an integer number (6152895).

Almost surely, 2^42106516 is an apocalyptic number.

It is an amenable number.

42106516 is a deficient number, since it is larger than the sum of its proper divisors (31728224).

42106516 is a wasteful number, since it uses less digits than its factorization.

42106516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21194 (or 21192 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 42106516 is about 6488.9533824801. The cubic root of 42106516 is about 347.8962675806.

The spelling of 42106516 in words is "forty-two million, one hundred six thousand, five hundred sixteen".