492421 has 2 divisors, whose sum is σ = 492422. Its totient is φ = 492420.

The previous prime is 492413. The next prime is 492431. The reversal of 492421 is 124294.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 408321 + 84100 = 639^2 + 290^2 .

It is a cyclic number.

It is not a de Polignac number, because 492421 - 2³ = 492413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 492392 and 492401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (492431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246210 + 246211.

It is an arithmetic number, because the mean of its divisors is an integer number (246211).

2⁴⁹²⁴²¹ is an apocalyptic number.

It is an amenable number.

492421 is a deficient number, since it is larger than the sum of its proper divisors (1).

492421 is an equidigital number, since it uses as much as digits as its factorization.

492421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 22.

The square root of 492421 is about 701.7271549541. The cubic root of 492421 is about 78.9669786684.

The spelling of 492421 in words is "four hundred ninety-two thousand, four hundred twenty-one".