42288521449 has 2 divisors, whose sum is σ = 42288521450. Its totient is φ = 42288521448.

The previous prime is 42288521371. The next prime is 42288521477. The reversal of 42288521449 is 94412588224.

42288521449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26580411225 + 15708110224 = 163035^2 + 125332^2 .

It is a cyclic number.

It is not a de Polignac number, because 42288521449 - 2¹⁵ = 42288488681 is a prime.

It is not a weakly prime, because it can be changed into another prime (42288522449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21144260724 + 21144260725.

It is an arithmetic number, because the mean of its divisors is an integer number (21144260725).

Almost surely, 2^42288521449 is an apocalyptic number.

It is an amenable number.

42288521449 is a deficient number, since it is larger than the sum of its proper divisors (1).

42288521449 is an equidigital number, since it uses as much as digits as its factorization.

42288521449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1474560, while the sum is 49.

The spelling of 42288521449 in words is "forty-two billion, two hundred eighty-eight million, five hundred twenty-one thousand, four hundred forty-nine".