42906233 has 2 divisors, whose sum is σ = 42906234. Its totient is φ = 42906232.

The previous prime is 42906221. The next prime is 42906239. The reversal of 42906233 is 33260924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42876304 + 29929 = 6548^2 + 173^2 .

It is a cyclic number.

It is not a de Polignac number, because 42906233 - 2¹² = 42902137 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42906196 and 42906205.

It is not a weakly prime, because it can be changed into another prime (42906239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21453116 + 21453117.

It is an arithmetic number, because the mean of its divisors is an integer number (21453117).

Almost surely, 2^42906233 is an apocalyptic number.

It is an amenable number.

42906233 is a deficient number, since it is larger than the sum of its proper divisors (1).

42906233 is an equidigital number, since it uses as much as digits as its factorization.

42906233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 42906233 is about 6550.2849556336. The cubic root of 42906233 is about 350.0849671265.

The spelling of 42906233 in words is "forty-two million, nine hundred six thousand, two hundred thirty-three".