915242 has 4 divisors (see below), whose sum is σ = 1372866. Its totient is φ = 457620.

The previous prime is 915223. The next prime is 915247. The reversal of 915242 is 242519.

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., 900601 + 14641 = 949^2 + 121^2 .

It is not an unprimeable number, because it can be changed into a prime (915247) by changing a digit.

915242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 228809 + ... + 228812.

2⁹¹⁵²⁴² is an apocalyptic number.

915242 is a deficient number, since it is larger than the sum of its proper divisors (457624).

915242 is a wasteful number, since it uses less digits than its factorization.

915242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457623.

The product of its digits is 720, while the sum is 23.

The square root of 915242 is about 956.6828105490. The cubic root of 915242 is about 97.0909268908.

It can be divided in two parts, 9 and 15242, that added together give a palindrome (15251).

The spelling of 915242 in words is "nine hundred fifteen thousand, two hundred forty-two".