142780065857 has 16 divisors (see below), whose sum is σ = 167788599552. Its totient is φ = 119781880320.

The previous prime is 142780065809. The next prime is 142780065859. The reversal of 142780065857 is 758560087241.

It is a cyclic number.

It is not a de Polignac number, because 142780065857 - 2⁸ = 142780065601 is a prime.

It is a super-3 number, since 3×142780065857³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142780065799 and 142780065808.

It is not an unprimeable number, because it can be changed into a prime (142780065859) 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 15 ways as a sum of consecutive naturals, for example, 379208 + ... + 655254.

It is an arithmetic number, because the mean of its divisors is an integer number (10486787472).

Almost surely, 2^142780065857 is an apocalyptic number.

It is an amenable number.

142780065857 is a deficient number, since it is larger than the sum of its proper divisors (25008533695).

142780065857 is a wasteful number, since it uses less digits than its factorization.

142780065857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279688.

The product of its (nonzero) digits is 3763200, while the sum is 53.

The spelling of 142780065857 in words is "one hundred forty-two billion, seven hundred eighty million, sixty-five thousand, eight hundred fifty-seven".