42812493 has 8 divisors (see below), whose sum is σ = 57121248. Its totient is φ = 28522704.

The previous prime is 42812447. The next prime is 42812501. The reversal of 42812493 is 39421824.

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

It is not a de Polignac number, because 42812493 - 2²¹ = 40715341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42812093) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1830 + ... + 9432.

It is an arithmetic number, because the mean of its divisors is an integer number (7140156).

Almost surely, 2^42812493 is an apocalyptic number.

It is an amenable number.

42812493 is a deficient number, since it is larger than the sum of its proper divisors (14308755).

42812493 is a wasteful number, since it uses less digits than its factorization.

42812493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9483.

The product of its digits is 13824, while the sum is 33.

The square root of 42812493 is about 6543.1256292387. The cubic root of 42812493 is about 349.8298302021.

It can be divided in two parts, 428 and 12493, that added together give a palindrome (12921).

The spelling of 42812493 in words is "forty-two million, eight hundred twelve thousand, four hundred ninety-three".