142849057669 has 8 divisors (see below), whose sum is σ = 142946129880. Its totient is φ = 142752024576.

The previous prime is 142849057661. The next prime is 142849057697. The reversal of 142849057669 is 966750948241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 103600296900 + 39248760769 = 321870^2 + 198113^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142849057669 - 2³ = 142849057661 is a prime.

It is a super-2 number, since 2×142849057669² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142849057661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11076577 + ... + 11089465.

It is an arithmetic number, because the mean of its divisors is an integer number (17868266235).

Almost surely, 2^142849057669 is an apocalyptic number.

It is an amenable number.

142849057669 is a deficient number, since it is larger than the sum of its proper divisors (97072211).

142849057669 is a wasteful number, since it uses less digits than its factorization.

142849057669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19559.

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 142849057669 in words is "one hundred forty-two billion, eight hundred forty-nine million, fifty-seven thousand, six hundred sixty-nine".