42898397 has 2 divisors, whose sum is σ = 42898398. Its totient is φ = 42898396.

The previous prime is 42898393. The next prime is 42898403. The reversal of 42898397 is 79389824.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42758521 + 139876 = 6539^2 + 374^2 .

It is a cyclic number.

It is not a de Polignac number, because 42898397 - 2² = 42898393 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42898393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21449198 + 21449199.

It is an arithmetic number, because the mean of its divisors is an integer number (21449199).

Almost surely, 2^42898397 is an apocalyptic number.

It is an amenable number.

42898397 is a deficient number, since it is larger than the sum of its proper divisors (1).

42898397 is an equidigital number, since it uses as much as digits as its factorization.

42898397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 50.

The square root of 42898397 is about 6549.6867864044. The cubic root of 42898397 is about 350.0636537289.

The spelling of 42898397 in words is "forty-two million, eight hundred ninety-eight thousand, three hundred ninety-seven".