42880393 has 2 divisors, whose sum is σ = 42880394. Its totient is φ = 42880392.

The previous prime is 42880391. The next prime is 42880457. The reversal of 42880393 is 39308824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25674489 + 17205904 = 5067^2 + 4148^2 .

It is a cyclic number.

It is not a de Polignac number, because 42880393 - 2¹ = 42880391 is a prime.

Together with 42880391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42880391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21440196 + 21440197.

It is an arithmetic number, because the mean of its divisors is an integer number (21440197).

Almost surely, 2^42880393 is an apocalyptic number.

It is an amenable number.

42880393 is a deficient number, since it is larger than the sum of its proper divisors (1).

42880393 is an equidigital number, since it uses as much as digits as its factorization.

42880393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 42880393 is about 6548.3122252990. The cubic root of 42880393 is about 350.0146742147.

The spelling of 42880393 in words is "forty-two million, eight hundred eighty thousand, three hundred ninety-three".