42527993 has 2 divisors, whose sum is σ = 42527994. Its totient is φ = 42527992.

The previous prime is 42527987. The next prime is 42528019. The reversal of 42527993 is 39972524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37982569 + 4545424 = 6163^2 + 2132^2 .

It is a cyclic number.

It is not a de Polignac number, because 42527993 - 2¹⁸ = 42265849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42527993.

It is not a weakly prime, because it can be changed into another prime (42527983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21263996 + 21263997.

It is an arithmetic number, because the mean of its divisors is an integer number (21263997).

Almost surely, 2^42527993 is an apocalyptic number.

It is an amenable number.

42527993 is a deficient number, since it is larger than the sum of its proper divisors (1).

42527993 is an equidigital number, since it uses as much as digits as its factorization.

42527993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 41.

The square root of 42527993 is about 6521.3490168829. The cubic root of 42527993 is about 349.0532043692.

The spelling of 42527993 in words is "forty-two million, five hundred twenty-seven thousand, nine hundred ninety-three".