42530351 has 2 divisors, whose sum is σ = 42530352. Its totient is φ = 42530350.

The previous prime is 42530321. The next prime is 42530387. The reversal of 42530351 is 15303524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42530351 - 2⁶ = 42530287 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42530321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21265175 + 21265176.

It is an arithmetic number, because the mean of its divisors is an integer number (21265176).

Almost surely, 2^42530351 is an apocalyptic number.

42530351 is a deficient number, since it is larger than the sum of its proper divisors (1).

42530351 is an equidigital number, since it uses as much as digits as its factorization.

42530351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 42530351 is about 6521.5298051914. The cubic root of 42530351 is about 349.0596554318.

Adding to 42530351 its reverse (15303524), we get a palindrome (57833875).

The spelling of 42530351 in words is "forty-two million, five hundred thirty thousand, three hundred fifty-one".