42522071 has 2 divisors, whose sum is σ = 42522072. Its totient is φ = 42522070.

The previous prime is 42522061. The next prime is 42522079. The reversal of 42522071 is 17022524.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42522071 - 2²² = 38327767 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42522079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21261035 + 21261036.

It is an arithmetic number, because the mean of its divisors is an integer number (21261036).

Almost surely, 2^42522071 is an apocalyptic number.

42522071 is a deficient number, since it is larger than the sum of its proper divisors (1).

42522071 is an equidigital number, since it uses as much as digits as its factorization.

42522071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 42522071 is about 6520.8949539155. The cubic root of 42522071 is about 349.0370017938.

Adding to 42522071 its reverse (17022524), we get a palindrome (59544595).

The spelling of 42522071 in words is "forty-two million, five hundred twenty-two thousand, seventy-one".