42641783 has 2 divisors, whose sum is σ = 42641784. Its totient is φ = 42641782.

The previous prime is 42641779. The next prime is 42641801. The reversal of 42641783 is 38714624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42641783 - 2² = 42641779 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 (42641713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21320891 + 21320892.

It is an arithmetic number, because the mean of its divisors is an integer number (21320892).

Almost surely, 2^42641783 is an apocalyptic number.

42641783 is a deficient number, since it is larger than the sum of its proper divisors (1).

42641783 is an equidigital number, since it uses as much as digits as its factorization.

42641783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 35.

The square root of 42641783 is about 6530.0676106760. The cubic root of 42641783 is about 349.3642417933.

The spelling of 42641783 in words is "forty-two million, six hundred forty-one thousand, seven hundred eighty-three".