256422352142 has 8 divisors (see below), whose sum is σ = 419600212632. Its totient is φ = 116555614600.

The previous prime is 256422352079. The next prime is 256422352157. The reversal of 256422352142 is 241253224652.

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

It is a junction number, because it is equal to n+sod(n) for n = 256422352096 and 256422352105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5827780709 + ... + 5827780752.

It is an arithmetic number, because the mean of its divisors is an integer number (52450026579).

Almost surely, 2^256422352142 is an apocalyptic number.

256422352142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

256422352142 is a deficient number, since it is larger than the sum of its proper divisors (163177860490).

256422352142 is a wasteful number, since it uses less digits than its factorization.

256422352142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11655561474.

The product of its digits is 230400, while the sum is 38.

Adding to 256422352142 its reverse (241253224652), we get a palindrome (497675576794).

The spelling of 256422352142 in words is "two hundred fifty-six billion, four hundred twenty-two million, three hundred fifty-two thousand, one hundred forty-two".