42270311 has 2 divisors, whose sum is σ = 42270312. Its totient is φ = 42270310.

The previous prime is 42270287. The next prime is 42270331. The reversal of 42270311 is 11307224.

It is an a-pointer prime, because the next prime (42270331) can be obtained adding 42270311 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42270311 - 2¹⁰ = 42269287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42270331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21135155 + 21135156.

It is an arithmetic number, because the mean of its divisors is an integer number (21135156).

Almost surely, 2^42270311 is an apocalyptic number.

42270311 is a deficient number, since it is larger than the sum of its proper divisors (1).

42270311 is an equidigital number, since it uses as much as digits as its factorization.

42270311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 42270311 is about 6501.5621968878. The cubic root of 42270311 is about 348.3467911947.

Adding to 42270311 its reverse (11307224), we get a palindrome (53577535).

The spelling of 42270311 in words is "forty-two million, two hundred seventy thousand, three hundred eleven".