42342645 has 16 divisors (see below), whose sum is σ = 67896000. Its totient is φ = 22533504.

The previous prime is 42342617. The next prime is 42342647. The reversal of 42342645 is 54624324.

It is not a de Polignac number, because 42342645 - 2⁵ = 42342613 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42342647) 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, 4657 + ... + 10313.

It is an arithmetic number, because the mean of its divisors is an integer number (4243500).

Almost surely, 2^42342645 is an apocalyptic number.

It is an amenable number.

42342645 is a deficient number, since it is larger than the sum of its proper divisors (25553355).

42342645 is a wasteful number, since it uses less digits than its factorization.

42342645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6164.

The product of its digits is 23040, while the sum is 30.

The square root of 42342645 is about 6507.1226360043. The cubic root of 42342645 is about 348.5453778393.

Adding to 42342645 its reverse (54624324), we get a palindrome (96966969).

The spelling of 42342645 in words is "forty-two million, three hundred forty-two thousand, six hundred forty-five".