42521341 has 2 divisors, whose sum is σ = 42521342. Its totient is φ = 42521340.

The previous prime is 42521329. The next prime is 42521357. The reversal of 42521341 is 14312524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26481316 + 16040025 = 5146^2 + 4005^2 .

It is a cyclic number.

It is not a de Polignac number, because 42521341 - 2¹¹ = 42519293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42521371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21260670 + 21260671.

It is an arithmetic number, because the mean of its divisors is an integer number (21260671).

Almost surely, 2^42521341 is an apocalyptic number.

It is an amenable number.

42521341 is a deficient number, since it is larger than the sum of its proper divisors (1).

42521341 is an equidigital number, since it uses as much as digits as its factorization.

42521341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 22.

The square root of 42521341 is about 6520.8389797633. The cubic root of 42521341 is about 349.0350044117.

Adding to 42521341 its reverse (14312524), we get a palindrome (56833865).

The spelling of 42521341 in words is "forty-two million, five hundred twenty-one thousand, three hundred forty-one".