42091308 has 144 divisors (see below), whose sum is σ = 131040000. Its totient is φ = 11124864.

The previous prime is 42091277. The next prime is 42091319. The reversal of 42091308 is 80319024.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 282418 + ... + 282566.

It is an arithmetic number, because the mean of its divisors is an integer number (910000).

Almost surely, 2^42091308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42091308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65520000).

42091308 is an abundant number, since it is smaller than the sum of its proper divisors (88948692).

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

42091308 is a wasteful number, since it uses less digits than its factorization.

42091308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 42091308 is about 6487.7814389821. The cubic root of 42091308 is about 347.8543782323.

The spelling of 42091308 in words is "forty-two million, ninety-one thousand, three hundred eight".