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BaseRepresentation
bin1110111101110110101
3220220201202
41313232311
5111143141
614302245
74111541
oct1675665
9826652
10490421
11305508
121b7985
131422b9
14caa21
159a49b
hex77bb5

490421 has 2 divisors, whose sum is σ = 490422. Its totient is φ = 490420.

The previous prime is 490417. The next prime is 490453. The reversal of 490421 is 124094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 483025 + 7396 = 695^2 + 86^2 .

It is a cyclic number.

It is not a de Polignac number, because 490421 - 22 = 490417 is a prime.

It is a Chen prime.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 490393 and 490402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245210 + 245211.

It is an arithmetic number, because the mean of its divisors is an integer number (245211).

2490421 is an apocalyptic number.

It is an amenable number.

490421 is a deficient number, since it is larger than the sum of its proper divisors (1).

490421 is an equidigital number, since it uses as much as digits as its factorization.

490421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 490421 is about 700.3006497212. The cubic root of 490421 is about 78.8599237562.

The spelling of 490421 in words is "four hundred ninety thousand, four hundred twenty-one".