42893251 has 2 divisors, whose sum is σ = 42893252. Its totient is φ = 42893250.

The previous prime is 42893237. The next prime is 42893273. The reversal of 42893251 is 15239824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42893251 - 2¹⁵ = 42860483 is a prime.

It is not a weakly prime, because it can be changed into another prime (42893351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21446625 + 21446626.

It is an arithmetic number, because the mean of its divisors is an integer number (21446626).

Almost surely, 2^42893251 is an apocalyptic number.

42893251 is a deficient number, since it is larger than the sum of its proper divisors (1).

42893251 is an equidigital number, since it uses as much as digits as its factorization.

42893251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 42893251 is about 6549.2939314097. The cubic root of 42893251 is about 350.0496555399.

The spelling of 42893251 in words is "forty-two million, eight hundred ninety-three thousand, two hundred fifty-one".