42735191 has 2 divisors, whose sum is σ = 42735192. Its totient is φ = 42735190.

The previous prime is 42735181. The next prime is 42735257. The reversal of 42735191 is 19153724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42735191 - 2¹⁸ = 42473047 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42735101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21367595 + 21367596.

It is an arithmetic number, because the mean of its divisors is an integer number (21367596).

Almost surely, 2^42735191 is an apocalyptic number.

42735191 is a deficient number, since it is larger than the sum of its proper divisors (1).

42735191 is an equidigital number, since it uses as much as digits as its factorization.

42735191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 42735191 is about 6537.2158446850. The cubic root of 42735191 is about 349.6191530848.

The spelling of 42735191 in words is "forty-two million, seven hundred thirty-five thousand, one hundred ninety-one".