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8421403 is a prime number
BaseRepresentation
bin100000001000…
…000000011011
3120211211222211
4200020000123
54123441103
6500255551
7131403124
oct40100033
916754884
108421403
114832141
1229a15b7
13198b1a3
14119304b
15b1536d
hex80801b

8421403 has 2 divisors, whose sum is σ = 8421404. Its totient is φ = 8421402.

The previous prime is 8421251. The next prime is 8421407. The reversal of 8421403 is 3041248.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8421403 - 29 = 8420891 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8421407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4210701 + 4210702.

It is an arithmetic number, because the mean of its divisors is an integer number (4210702).

Almost surely, 28421403 is an apocalyptic number.

8421403 is a deficient number, since it is larger than the sum of its proper divisors (1).

8421403 is an equidigital number, since it uses as much as digits as its factorization.

8421403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 8421403 is about 2901.9653685046. The cubic root of 8421403 is about 203.4517751818.

The spelling of 8421403 in words is "eight million, four hundred twenty-one thousand, four hundred three".