42510435449 has 4 divisors (see below), whose sum is σ = 43547275380. Its totient is φ = 41473595520.

The previous prime is 42510435379. The next prime is 42510435463. The reversal of 42510435449 is 94453401524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2092147600 + 40418287849 = 45740^2 + 201043^2 .

It is a cyclic number.

It is not a de Polignac number, because 42510435449 - 2³² = 38215468153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 1036839889 = 42510435449 / (4 + 2 + 5 + 1 + 0 + 4 + 3 + 5 + 4 + 4 + 9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42510431449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518419904 + ... + 518419985.

It is an arithmetic number, because the mean of its divisors is an integer number (10886818845).

Almost surely, 2^42510435449 is an apocalyptic number.

It is an amenable number.

42510435449 is a deficient number, since it is larger than the sum of its proper divisors (1036839931).

42510435449 is a wasteful number, since it uses less digits than its factorization.

42510435449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036839930.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 42510435449 in words is "forty-two billion, five hundred ten million, four hundred thirty-five thousand, four hundred forty-nine".