42789041 has 2 divisors, whose sum is σ = 42789042. Its totient is φ = 42789040.

The previous prime is 42789031. The next prime is 42789049. The reversal of 42789041 is 14098724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25806400 + 16982641 = 5080^2 + 4121^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42789041 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42788992 and 42789010.

It is not a weakly prime, because it can be changed into another prime (42789049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21394520 + 21394521.

It is an arithmetic number, because the mean of its divisors is an integer number (21394521).

Almost surely, 2^42789041 is an apocalyptic number.

It is an amenable number.

42789041 is a deficient number, since it is larger than the sum of its proper divisors (1).

42789041 is an equidigital number, since it uses as much as digits as its factorization.

42789041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 42789041 is about 6541.3332738823. Note that the first 3 decimals coincide. The cubic root of 42789041 is about 349.7659414701.

The spelling of 42789041 in words is "forty-two million, seven hundred eighty-nine thousand, forty-one".