42541273 has 2 divisors, whose sum is σ = 42541274. Its totient is φ = 42541272.

The previous prime is 42541271. The next prime is 42541277. The reversal of 42541273 is 37214524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37356544 + 5184729 = 6112^2 + 2277^2 .

It is a cyclic number.

It is not a de Polignac number, because 42541273 - 2¹ = 42541271 is a prime.

Together with 42541271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42541271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21270636 + 21270637.

It is an arithmetic number, because the mean of its divisors is an integer number (21270637).

Almost surely, 2^42541273 is an apocalyptic number.

It is an amenable number.

42541273 is a deficient number, since it is larger than the sum of its proper divisors (1).

42541273 is an equidigital number, since it uses as much as digits as its factorization.

42541273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 28.

The square root of 42541273 is about 6522.3671316478. The cubic root of 42541273 is about 349.0895329441.

Adding to 42541273 its reverse (37214524), we get a palindrome (79755797).

The spelling of 42541273 in words is "forty-two million, five hundred forty-one thousand, two hundred seventy-three".