42201541 has 2 divisors, whose sum is σ = 42201542. Its totient is φ = 42201540.

The previous prime is 42201539. The next prime is 42201547. The reversal of 42201541 is 14510224.

42201541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39125025 + 3076516 = 6255^2 + 1754^2 .

It is a cyclic number.

It is not a de Polignac number, because 42201541 - 2¹ = 42201539 is a prime.

Together with 42201539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42201547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21100770 + 21100771.

It is an arithmetic number, because the mean of its divisors is an integer number (21100771).

Almost surely, 2^42201541 is an apocalyptic number.

It is an amenable number.

42201541 is a deficient number, since it is larger than the sum of its proper divisors (1).

42201541 is an equidigital number, since it uses as much as digits as its factorization.

42201541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 42201541 is about 6496.2713151469. The cubic root of 42201541 is about 348.1577790068.

Adding to 42201541 its reverse (14510224), we get a palindrome (56711765).

The spelling of 42201541 in words is "forty-two million, two hundred one thousand, five hundred forty-one".