612842 has 4 divisors (see below), whose sum is σ = 919266. Its totient is φ = 306420.

The previous prime is 612841. The next prime is 612847. The reversal of 612842 is 248216.

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., 564001 + 48841 = 751^2 + 221^2 .

It is not an unprimeable number, because it can be changed into a prime (612841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153209 + ... + 153212.

2⁶¹²⁸⁴² is an apocalyptic number.

612842 is a deficient number, since it is larger than the sum of its proper divisors (306424).

612842 is a wasteful number, since it uses less digits than its factorization.

612842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306423.

The product of its digits is 768, while the sum is 23.

The square root of 612842 is about 782.8422574184. The cubic root of 612842 is about 84.9407661131.

The spelling of 612842 in words is "six hundred twelve thousand, eight hundred forty-two".