42042573 has 12 divisors (see below), whose sum is σ = 63924640. Its totient is φ = 26553096.

The previous prime is 42042569. The next prime is 42042587. The reversal of 42042573 is 37524024.

It is not a de Polignac number, because 42042573 - 2² = 42042569 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42042523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122761 + ... + 123102.

Almost surely, 2^42042573 is an apocalyptic number.

It is an amenable number.

42042573 is a deficient number, since it is larger than the sum of its proper divisors (21882067).

42042573 is a wasteful number, since it uses less digits than its factorization.

42042573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245888 (or 245885 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 42042573 is about 6484.0244447411. The cubic root of 42042573 is about 347.7200731468.

Adding to 42042573 its reverse (37524024), we get a palindrome (79566597).

The spelling of 42042573 in words is "forty-two million, forty-two thousand, five hundred seventy-three".