42449087 has 2 divisors, whose sum is σ = 42449088. Its totient is φ = 42449086.

The previous prime is 42449003. The next prime is 42449089. The reversal of 42449087 is 78094424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42449087 - 2¹⁴ = 42432703 is a prime.

Together with 42449089, it forms a pair of twin primes.

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 42449087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42449089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21224543 + 21224544.

It is an arithmetic number, because the mean of its divisors is an integer number (21224544).

Almost surely, 2^42449087 is an apocalyptic number.

42449087 is a deficient number, since it is larger than the sum of its proper divisors (1).

42449087 is an equidigital number, since it uses as much as digits as its factorization.

42449087 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 42449087 is about 6515.2963861976. The cubic root of 42449087 is about 348.8371941467.

It can be divided in two parts, 4244 and 9087, that added together give a palindrome (13331).

The spelling of 42449087 in words is "forty-two million, four hundred forty-nine thousand, eighty-seven".