42530371 has 12 divisors (see below), whose sum is σ = 46247760. Its totient is φ = 39093600.

The previous prime is 42530351. The next prime is 42530387. The reversal of 42530371 is 17303524.

It is not a de Polignac number, because 42530371 - 2²¹ = 40433219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42530321) 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, 60321 + ... + 61021.

It is an arithmetic number, because the mean of its divisors is an integer number (3853980).

Almost surely, 2^42530371 is an apocalyptic number.

42530371 is a deficient number, since it is larger than the sum of its proper divisors (3717389).

42530371 is a wasteful number, since it uses less digits than its factorization.

42530371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086 (or 1073 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 42530371 is about 6521.5313385738. The cubic root of 42530371 is about 349.0597101472.

Adding to 42530371 its reverse (17303524), we get a palindrome (59833895).

The spelling of 42530371 in words is "forty-two million, five hundred thirty thousand, three hundred seventy-one".