42073243 has 2 divisors, whose sum is σ = 42073244. Its totient is φ = 42073242.

The previous prime is 42073223. The next prime is 42073259. The reversal of 42073243 is 34237024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42073243 - 2⁵ = 42073211 is a prime.

It is not a weakly prime, because it can be changed into another prime (42073223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21036621 + 21036622.

It is an arithmetic number, because the mean of its divisors is an integer number (21036622).

Almost surely, 2^42073243 is an apocalyptic number.

42073243 is a deficient number, since it is larger than the sum of its proper divisors (1).

42073243 is an equidigital number, since it uses as much as digits as its factorization.

42073243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 42073243 is about 6486.3890570949. The cubic root of 42073243 is about 347.8046063684.

The spelling of 42073243 in words is "forty-two million, seventy-three thousand, two hundred forty-three".