42812308 has 48 divisors (see below), whose sum is σ = 94437504. Its totient is φ = 16496640.

The previous prime is 42812299. The next prime is 42812311. The reversal of 42812308 is 80321824.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29160 + ... + 30592.

It is an arithmetic number, because the mean of its divisors is an integer number (1967448).

Almost surely, 2^42812308 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 42812308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47218752).

42812308 is an abundant number, since it is smaller than the sum of its proper divisors (51625196).

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

42812308 is a wasteful number, since it uses less digits than its factorization.

42812308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552 (or 1550 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 42812308 is about 6543.1114922489. Note that the first 3 decimals coincide. The cubic root of 42812308 is about 349.8293263102.

The spelling of 42812308 in words is "forty-two million, eight hundred twelve thousand, three hundred eight".