855242 has 4 divisors (see below), whose sum is σ = 1282866. Its totient is φ = 427620.

The previous prime is 855241. The next prime is 855269. The reversal of 855242 is 242558.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 703921 + 151321 = 839^2 + 389^2 .

It is a d-powerful number, because it can be written as 8 + 5⁸ + 2¹³ + 5⁸ + 4⁴ + 2¹⁶ .

It is not an unprimeable number, because it can be changed into a prime (855241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213809 + ... + 213812.

2⁸⁵⁵²⁴² is an apocalyptic number.

855242 is a deficient number, since it is larger than the sum of its proper divisors (427624).

855242 is a wasteful number, since it uses less digits than its factorization.

855242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427623.

The product of its digits is 3200, while the sum is 26.

The square root of 855242 is about 924.7929498001. The cubic root of 855242 is about 94.9211534148.

The spelling of 855242 in words is "eight hundred fifty-five thousand, two hundred forty-two".