42299069 has 4 divisors (see below), whose sum is σ = 42324096. Its totient is φ = 42274044.

The previous prime is 42299063. The next prime is 42299071. The reversal of 42299069 is 96099224.

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 a de Polignac number, because none of the positive numbers 2^k-42299069 is a prime.

It is a super-2 number, since 2×42299069² = 3578422476533522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42299063) 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, 9779 + ... + 13424.

It is an arithmetic number, because the mean of its divisors is an integer number (10581024).

Almost surely, 2^42299069 is an apocalyptic number.

It is an amenable number.

42299069 is a deficient number, since it is larger than the sum of its proper divisors (25027).

42299069 is a wasteful number, since it uses less digits than its factorization.

42299069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25026.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 42299069 is about 6503.7734431636. The cubic root of 42299069 is about 348.4257708681.

The spelling of 42299069 in words is "forty-two million, two hundred ninety-nine thousand, sixty-nine".