42998693 has 2 divisors, whose sum is σ = 42998694. Its totient is φ = 42998692.

The previous prime is 42998671. The next prime is 42998713. The reversal of 42998693 is 39689924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40742689 + 2256004 = 6383^2 + 1502^2 .

It is a cyclic number.

It is not a de Polignac number, because 42998693 - 2²⁴ = 26221477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42998603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21499346 + 21499347.

It is an arithmetic number, because the mean of its divisors is an integer number (21499347).

Almost surely, 2^42998693 is an apocalyptic number.

It is an amenable number.

42998693 is a deficient number, since it is larger than the sum of its proper divisors (1).

42998693 is an equidigital number, since it uses as much as digits as its factorization.

42998693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 50.

The square root of 42998693 is about 6557.3388657290. The cubic root of 42998693 is about 350.3362564358.

The spelling of 42998693 in words is "forty-two million, nine hundred ninety-eight thousand, six hundred ninety-three".