141778449 has 12 divisors (see below), whose sum is σ = 205035012. Its totient is φ = 94406400.

The previous prime is 141778397. The next prime is 141778459. The reversal of 141778449 is 944877141.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 38044224 + 103734225 = 6168^2 + 10185^2 .

It is not a de Polignac number, because 141778449 - 2⁷ = 141778321 is a prime.

It is a super-2 number, since 2×141778449² = 40202257201691202, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (141778459) 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 in 11 ways as a sum of consecutive naturals, for example, 1012 + ... + 16869.

It is an arithmetic number, because the mean of its divisors is an integer number (17086251).

Almost surely, 2^141778449 is an apocalyptic number.

It is an amenable number.

141778449 is a deficient number, since it is larger than the sum of its proper divisors (63256563).

141778449 is a wasteful number, since it uses less digits than its factorization.

141778449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18768 (or 18765 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 141778449 is about 11907.0755855500. The cubic root of 141778449 is about 521.4388760512.

The spelling of 141778449 in words is "one hundred forty-one million, seven hundred seventy-eight thousand, four hundred forty-nine".