42812299 has 2 divisors, whose sum is σ = 42812300. Its totient is φ = 42812298.

The previous prime is 42812279. The next prime is 42812311. The reversal of 42812299 is 99221824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42812299 - 2¹³ = 42804107 is a prime.

It is not a weakly prime, because it can be changed into another prime (42812249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21406149 + 21406150.

It is an arithmetic number, because the mean of its divisors is an integer number (21406150).

Almost surely, 2^42812299 is an apocalyptic number.

42812299 is a deficient number, since it is larger than the sum of its proper divisors (1).

42812299 is an equidigital number, since it uses as much as digits as its factorization.

42812299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 37.

The square root of 42812299 is about 6543.1108045027. The cubic root of 42812299 is about 349.8293017965.

The spelling of 42812299 in words is "forty-two million, eight hundred twelve thousand, two hundred ninety-nine".