42555473 has 2 divisors, whose sum is σ = 42555474. Its totient is φ = 42555472.

The previous prime is 42555427. The next prime is 42555479. The reversal of 42555473 is 37455524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40857664 + 1697809 = 6392^2 + 1303^2 .

It is a cyclic number.

It is not a de Polignac number, because 42555473 - 2²⁴ = 25778257 is a prime.

It is not a weakly prime, because it can be changed into another prime (42555479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21277736 + 21277737.

It is an arithmetic number, because the mean of its divisors is an integer number (21277737).

Almost surely, 2^42555473 is an apocalyptic number.

It is an amenable number.

42555473 is a deficient number, since it is larger than the sum of its proper divisors (1).

42555473 is an equidigital number, since it uses as much as digits as its factorization.

42555473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84000, while the sum is 35.

The square root of 42555473 is about 6523.4556026695. The cubic root of 42555473 is about 349.1283698945.

The spelling of 42555473 in words is "forty-two million, five hundred fifty-five thousand, four hundred seventy-three".