42897799 has 4 divisors (see below), whose sum is σ = 49026064. Its totient is φ = 36769536.

The previous prime is 42897797. The next prime is 42897821. The reversal of 42897799 is 99779824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42897799 - 2¹ = 42897797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42897797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3064122 + ... + 3064135.

It is an arithmetic number, because the mean of its divisors is an integer number (12256516).

Almost surely, 2^42897799 is an apocalyptic number.

42897799 is a deficient number, since it is larger than the sum of its proper divisors (6128265).

42897799 is an equidigital number, since it uses as much as digits as its factorization.

42897799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6128264.

The product of its digits is 2286144, while the sum is 55.

The square root of 42897799 is about 6549.6411352073. The cubic root of 42897799 is about 350.0620271021.

The spelling of 42897799 in words is "forty-two million, eight hundred ninety-seven thousand, seven hundred ninety-nine".