42025481 has 2 divisors, whose sum is σ = 42025482. Its totient is φ = 42025480.

The previous prime is 42025469. The next prime is 42025499. The reversal of 42025481 is 18452024.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41925625 + 99856 = 6475^2 + 316^2 .

It is a cyclic number.

It is not a de Polignac number, because 42025481 - 2¹⁰ = 42024457 is a prime.

It is a super-2 number, since 2×42025481² = 3532282106562722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42025481.

It is not a weakly prime, because it can be changed into another prime (42015481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21012740 + 21012741.

It is an arithmetic number, because the mean of its divisors is an integer number (21012741).

Almost surely, 2^42025481 is an apocalyptic number.

It is an amenable number.

42025481 is a deficient number, since it is larger than the sum of its proper divisors (1).

42025481 is an equidigital number, since it uses as much as digits as its factorization.

42025481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 42025481 is about 6482.7063021550. The cubic root of 42025481 is about 347.6729460195.

The spelling of 42025481 in words is "forty-two million, twenty-five thousand, four hundred eighty-one".