855956242 has 8 divisors (see below), whose sum is σ = 1295296956. Its totient is φ = 424190592.

The previous prime is 855956219. The next prime is 855956243. The reversal of 855956242 is 242659558.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 855621001 + 335241 = 29251^2 + 579^2 .

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

It is a super-2 number, since 2×855956242² = 1465322176437525128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 855956192 and 855956201.

It is not an unprimeable number, because it can be changed into a prime (855956243) 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 3 ways as a sum of consecutive naturals, for example, 1893483 + ... + 1893934.

Almost surely, 2^855956242 is an apocalyptic number.

855956242 is a deficient number, since it is larger than the sum of its proper divisors (439340714).

855956242 is a wasteful number, since it uses less digits than its factorization.

855956242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3787532.

The product of its digits is 864000, while the sum is 46.

The square root of 855956242 is about 29256.7298582736. The cubic root of 855956242 is about 949.4757003536.

The spelling of 855956242 in words is "eight hundred fifty-five million, nine hundred fifty-six thousand, two hundred forty-two".