42106506 has 32 divisors (see below), whose sum is σ = 91324800. Its totient is φ = 12865344.

The previous prime is 42106499. The next prime is 42106513. The reversal of 42106506 is 60560124.

It is an interprime number because it is at equal distance from previous prime (42106499) and next prime (42106513).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9811 + ... + 13433.

It is an arithmetic number, because the mean of its divisors is an integer number (2853900).

Almost surely, 2^42106506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42106506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45662400).

42106506 is an abundant number, since it is smaller than the sum of its proper divisors (49218294).

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

42106506 is a wasteful number, since it uses less digits than its factorization.

42106506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3790.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 42106506 is about 6488.9526119398. The cubic root of 42106506 is about 347.8962400396.

The spelling of 42106506 in words is "forty-two million, one hundred six thousand, five hundred six".