490421902 has 16 divisors (see below), whose sum is σ = 757365840. Its totient is φ = 237999168.

The previous prime is 490421861. The next prime is 490421909. The reversal of 490421902 is 209124094.

It is a happy number.

It is a super-2 number, since 2×490421902² = 481027283922595208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490421909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23098 + ... + 38914.

It is an arithmetic number, because the mean of its divisors is an integer number (47335365).

Almost surely, 2^490421902 is an apocalyptic number.

490421902 is a deficient number, since it is larger than the sum of its proper divisors (266943938).

490421902 is a wasteful number, since it uses less digits than its factorization.

490421902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16275.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 490421902 is about 22145.4713654959. The cubic root of 490421902 is about 788.5997210352.

Adding to 490421902 its reverse (209124094), we get a palindrome (699545996).

The spelling of 490421902 in words is "four hundred ninety million, four hundred twenty-one thousand, nine hundred two".