42342245 has 16 divisors (see below), whose sum is σ = 56930688. Its totient is φ = 29960640.

The previous prime is 42342239. The next prime is 42342247. The reversal of 42342245 is 54224324.

It is a happy number.

It is not a de Polignac number, because 42342245 - 2¹⁴ = 42325861 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 (42342247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8369 + ... + 12438.

It is an arithmetic number, because the mean of its divisors is an integer number (3558168).

Almost surely, 2^42342245 is an apocalyptic number.

It is an amenable number.

42342245 is a deficient number, since it is larger than the sum of its proper divisors (14588443).

42342245 is a wasteful number, since it uses less digits than its factorization.

42342245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20860.

The product of its digits is 7680, while the sum is 26.

The square root of 42342245 is about 6507.0919003807. The cubic root of 42342245 is about 348.5442802966.

Adding to 42342245 its reverse (54224324), we get a palindrome (96566569).

The spelling of 42342245 in words is "forty-two million, three hundred forty-two thousand, two hundred forty-five".