42864511 has 2 divisors, whose sum is σ = 42864512. Its totient is φ = 42864510.

The previous prime is 42864491. The next prime is 42864527. The reversal of 42864511 is 11546824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42864511 - 2⁹ = 42863999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42864541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21432255 + 21432256.

It is an arithmetic number, because the mean of its divisors is an integer number (21432256).

Almost surely, 2^42864511 is an apocalyptic number.

42864511 is a deficient number, since it is larger than the sum of its proper divisors (1).

42864511 is an equidigital number, since it uses as much as digits as its factorization.

42864511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 31.

The square root of 42864511 is about 6547.0994341006. The cubic root of 42864511 is about 349.9714561756.

The spelling of 42864511 in words is "forty-two million, eight hundred sixty-four thousand, five hundred eleven".