42343573 has 2 divisors, whose sum is σ = 42343574. Its totient is φ = 42343572.

The previous prime is 42343547. The next prime is 42343601. The reversal of 42343573 is 37534324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37920964 + 4422609 = 6158^2 + 2103^2 .

It is a cyclic number.

It is not a de Polignac number, because 42343573 - 2⁵ = 42343541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42343673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21171786 + 21171787.

It is an arithmetic number, because the mean of its divisors is an integer number (21171787).

Almost surely, 2^42343573 is an apocalyptic number.

It is an amenable number.

42343573 is a deficient number, since it is larger than the sum of its proper divisors (1).

42343573 is an equidigital number, since it uses as much as digits as its factorization.

42343573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 31.

The square root of 42343573 is about 6507.1939420921. The cubic root of 42343573 is about 348.5479241119.

Adding to 42343573 its reverse (37534324), we get a palindrome (79877897).

Subtracting from 42343573 its reverse (37534324), we obtain a square (4809249 = 2193²).

The spelling of 42343573 in words is "forty-two million, three hundred forty-three thousand, five hundred seventy-three".