42311573 has 2 divisors, whose sum is σ = 42311574. Its totient is φ = 42311572.

The previous prime is 42311569. The next prime is 42311587. The reversal of 42311573 is 37511324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33443089 + 8868484 = 5783^2 + 2978^2 .

It is a cyclic number.

It is not a de Polignac number, because 42311573 - 2² = 42311569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42311593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21155786 + 21155787.

It is an arithmetic number, because the mean of its divisors is an integer number (21155787).

Almost surely, 2^42311573 is an apocalyptic number.

It is an amenable number.

42311573 is a deficient number, since it is larger than the sum of its proper divisors (1).

42311573 is an equidigital number, since it uses as much as digits as its factorization.

42311573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 26.

The square root of 42311573 is about 6504.7346602302. The cubic root of 42311573 is about 348.4601001234.

Adding to 42311573 its reverse (37511324), we get a palindrome (79822897).

The spelling of 42311573 in words is "forty-two million, three hundred eleven thousand, five hundred seventy-three".