42454549 has 2 divisors, whose sum is σ = 42454550. Its totient is φ = 42454548.

The previous prime is 42454547. The next prime is 42454553. The reversal of 42454549 is 94545424.

42454549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30448324 + 12006225 = 5518^2 + 3465^2 .

It is a cyclic number.

It is not a de Polignac number, because 42454549 - 2¹ = 42454547 is a prime.

Together with 42454547, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42454547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21227274 + 21227275.

It is an arithmetic number, because the mean of its divisors is an integer number (21227275).

Almost surely, 2^42454549 is an apocalyptic number.

It is an amenable number.

42454549 is a deficient number, since it is larger than the sum of its proper divisors (1).

42454549 is an equidigital number, since it uses as much as digits as its factorization.

42454549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 37.

The square root of 42454549 is about 6515.7155401383. The cubic root of 42454549 is about 348.8521553404.

The spelling of 42454549 in words is "forty-two million, four hundred fifty-four thousand, five hundred forty-nine".