490691042 has 4 divisors (see below), whose sum is σ = 736036566. Its totient is φ = 245345520.

The previous prime is 490691029. The next prime is 490691051. The reversal of 490691042 is 240196094.

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., 486158401 + 4532641 = 22049^2 + 2129^2 .

It is a junction number, because it is equal to n+sod(n) for n = 490690993 and 490691011.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122672759 + ... + 122672762.

Almost surely, 2^490691042 is an apocalyptic number.

490691042 is a deficient number, since it is larger than the sum of its proper divisors (245345524).

490691042 is a wasteful number, since it uses less digits than its factorization.

490691042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245345523.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 490691042 is about 22151.5471694417. The cubic root of 490691042 is about 788.7439539321.

The spelling of 490691042 in words is "four hundred ninety million, six hundred ninety-one thousand, forty-two".