490121231 has 2 divisors, whose sum is σ = 490121232. Its totient is φ = 490121230.

The previous prime is 490121227. The next prime is 490121239. The reversal of 490121231 is 132121094.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 490121231 - 2² = 490121227 is a prime.

It is a super-2 number, since 2×490121231² = 480437642153910722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 490121197 and 490121206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490121239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245060615 + 245060616.

It is an arithmetic number, because the mean of its divisors is an integer number (245060616).

Almost surely, 2^490121231 is an apocalyptic number.

490121231 is a deficient number, since it is larger than the sum of its proper divisors (1).

490121231 is an equidigital number, since it uses as much as digits as its factorization.

490121231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 490121231 is about 22138.6817809914. The cubic root of 490121231 is about 788.4385281668.

The spelling of 490121231 in words is "four hundred ninety million, one hundred twenty-one thousand, two hundred thirty-one".