42980447 has 2 divisors, whose sum is σ = 42980448. Its totient is φ = 42980446.

The previous prime is 42980389. The next prime is 42980467. The reversal of 42980447 is 74408924.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42980447 - 2¹⁸ = 42718303 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42980447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42980467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21490223 + 21490224.

It is an arithmetic number, because the mean of its divisors is an integer number (21490224).

Almost surely, 2^42980447 is an apocalyptic number.

42980447 is a deficient number, since it is larger than the sum of its proper divisors (1).

42980447 is an equidigital number, since it uses as much as digits as its factorization.

42980447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 42980447 is about 6555.9474525045. The cubic root of 42980447 is about 350.2866957069.

The spelling of 42980447 in words is "forty-two million, nine hundred eighty thousand, four hundred forty-seven".