42340099 has 4 divisors (see below), whose sum is σ = 43484464. Its totient is φ = 41195736.

The previous prime is 42340097. The next prime is 42340121. The reversal of 42340099 is 99004324.

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 42340099 - 2¹ = 42340097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42340099.

It is not an unprimeable number, because it can be changed into a prime (42340093) 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, 572127 + ... + 572200.

It is an arithmetic number, because the mean of its divisors is an integer number (10871116).

Almost surely, 2^42340099 is an apocalyptic number.

42340099 is a deficient number, since it is larger than the sum of its proper divisors (1144365).

42340099 is a wasteful number, since it uses less digits than its factorization.

42340099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144364.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 42340099 is about 6506.9270012810. The cubic root of 42340099 is about 348.5383918617.

The spelling of 42340099 in words is "forty-two million, three hundred forty thousand, ninety-nine".