918242 has 8 divisors (see below), whose sum is σ = 1483356. Its totient is φ = 423792.

The previous prime is 918223. The next prime is 918257. The reversal of 918242 is 242819.

It can be written as a sum of positive squares in 2 ways, for example, as 885481 + 32761 = 941^2 + 181^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 35317 = 918242 / (9 + 1 + 8 + 2 + 4 + 2).

It is an Ulam number.

It is a d-powerful number, because it can be written as 9³ + 1 + 2¹⁷ + 8 + 4⁹ + 2¹⁹ .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 918242.

It is an unprimeable number.

918242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17633 + ... + 17684.

2⁹¹⁸²⁴² is an apocalyptic number.

918242 is a deficient number, since it is larger than the sum of its proper divisors (565114).

918242 is a wasteful number, since it uses less digits than its factorization.

918242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35332.

The product of its digits is 1152, while the sum is 26.

The square root of 918242 is about 958.2494456038. The cubic root of 918242 is about 97.1968934411.

The spelling of 918242 in words is "nine hundred eighteen thousand, two hundred forty-two".