42091822 has 8 divisors (see below), whose sum is σ = 63696816. Its totient is φ = 20859552.

The previous prime is 42091807. The next prime is 42091823. The reversal of 42091822 is 22819024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42091823) 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, 92898 + ... + 93349.

It is an arithmetic number, because the mean of its divisors is an integer number (7962102).

Almost surely, 2^42091822 is an apocalyptic number.

42091822 is a deficient number, since it is larger than the sum of its proper divisors (21604994).

42091822 is a wasteful number, since it uses less digits than its factorization.

42091822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186362.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 42091822 is about 6487.8210517862. The cubic root of 42091822 is about 347.8557941733.

The spelling of 42091822 in words is "forty-two million, ninety-one thousand, eight hundred twenty-two".