491280242 has 12 divisors (see below), whose sum is σ = 763210266. Its totient is φ = 237168960.

The previous prime is 491280241. The next prime is 491280259. The reversal of 491280242 is 242082194.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 302794801 + 188485441 = 17401^2 + 13729^2 .

It is a junction number, because it is equal to n+sod(n) for n = 491280199 and 491280208.

It is not an unprimeable number, because it can be changed into a prime (491280241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 144359 + ... + 147722.

Almost surely, 2^491280242 is an apocalyptic number.

491280242 is a deficient number, since it is larger than the sum of its proper divisors (271930024).

491280242 is a wasteful number, since it uses less digits than its factorization.

491280242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292141 (or 292112 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 491280242 is about 22164.8424763182. The cubic root of 491280242 is about 789.0595238893.

The spelling of 491280242 in words is "four hundred ninety-one million, two hundred eighty thousand, two hundred forty-two".