42812297 has 4 divisors (see below), whose sum is σ = 46704336. Its totient is φ = 38920260.

The previous prime is 42812279. The next prime is 42812299. The reversal of 42812297 is 79221824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42812297 - 2⁸ = 42812041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42812299) 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 3 ways as a sum of consecutive naturals, for example, 1946003 + ... + 1946024.

It is an arithmetic number, because the mean of its divisors is an integer number (11676084).

Almost surely, 2^42812297 is an apocalyptic number.

It is an amenable number.

42812297 is a deficient number, since it is larger than the sum of its proper divisors (3892039).

42812297 is a wasteful number, since it uses less digits than its factorization.

42812297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3892038.

The product of its digits is 16128, while the sum is 35.

The square root of 42812297 is about 6543.1106516702. The cubic root of 42812297 is about 349.8292963490.

The spelling of 42812297 in words is "forty-two million, eight hundred twelve thousand, two hundred ninety-seven".