42310643 has 4 divisors (see below), whose sum is σ = 42358200. Its totient is φ = 42263088.

The previous prime is 42310613. The next prime is 42310657. The reversal of 42310643 is 34601324.

It is a happy number.

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 42310643 - 2⁶ = 42310579 is a prime.

It is a super-2 number, since 2×42310643² = 3580381022146898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42310613) 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, 22418 + ... + 24231.

It is an arithmetic number, because the mean of its divisors is an integer number (10589550).

Almost surely, 2^42310643 is an apocalyptic number.

42310643 is a deficient number, since it is larger than the sum of its proper divisors (47557).

42310643 is an equidigital number, since it uses as much as digits as its factorization.

42310643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47556.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 42310643 is about 6504.6631734472. The cubic root of 42310643 is about 348.4575470767.

Adding to 42310643 its reverse (34601324), we get a palindrome (76911967).

The spelling of 42310643 in words is "forty-two million, three hundred ten thousand, six hundred forty-three".