42773791 has 2 divisors, whose sum is σ = 42773792. Its totient is φ = 42773790.

The previous prime is 42773747. The next prime is 42773821. The reversal of 42773791 is 19737724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42773791 - 2¹⁹ = 42249503 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 (42773711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21386895 + 21386896.

It is an arithmetic number, because the mean of its divisors is an integer number (21386896).

Almost surely, 2^42773791 is an apocalyptic number.

42773791 is a deficient number, since it is larger than the sum of its proper divisors (1).

42773791 is an equidigital number, since it uses as much as digits as its factorization.

42773791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74088, while the sum is 40.

The square root of 42773791 is about 6540.1675055001. The cubic root of 42773791 is about 349.7243843776.

The spelling of 42773791 in words is "forty-two million, seven hundred seventy-three thousand, seven hundred ninety-one".