42340645 has 8 divisors (see below), whose sum is σ = 53483040. Its totient is φ = 32089680.

The previous prime is 42340621. The next prime is 42340663. The reversal of 42340645 is 54604324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42340645 - 2¹⁵ = 42307877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222751 + ... + 222940.

It is an arithmetic number, because the mean of its divisors is an integer number (6685380).

Almost surely, 2^42340645 is an apocalyptic number.

It is an amenable number.

42340645 is a deficient number, since it is larger than the sum of its proper divisors (11142395).

42340645 is a wasteful number, since it uses less digits than its factorization.

42340645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445715.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 42340645 is about 6506.9689564343. The cubic root of 42340645 is about 348.5398900564.

Adding to 42340645 its reverse (54604324), we get a palindrome (96944969).

The spelling of 42340645 in words is "forty-two million, three hundred forty thousand, six hundred forty-five".