42660901 has 2 divisors, whose sum is σ = 42660902. Its totient is φ = 42660900.

The previous prime is 42660887. The next prime is 42660911. The reversal of 42660901 is 10906624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41912676 + 748225 = 6474^2 + 865^2 .

It is a cyclic number.

It is not a de Polignac number, because 42660901 - 2¹¹ = 42658853 is a prime.

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 42660901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42660911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21330450 + 21330451.

It is an arithmetic number, because the mean of its divisors is an integer number (21330451).

Almost surely, 2^42660901 is an apocalyptic number.

It is an amenable number.

42660901 is a deficient number, since it is larger than the sum of its proper divisors (1).

42660901 is an equidigital number, since it uses as much as digits as its factorization.

42660901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 42660901 is about 6531.5312905933. The cubic root of 42660901 is about 349.4164452675.

The spelling of 42660901 in words is "forty-two million, six hundred sixty thousand, nine hundred one".