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1425427 is a prime number
BaseRepresentation
bin101011100000000010011
32200102022121
411130000103
5331103202
650315111
715054523
oct5340023
92612277
101425427
11893a43
12588a97
133aba63
14291683
151d2537
hex15c013

1425427 has 2 divisors, whose sum is σ = 1425428. Its totient is φ = 1425426.

The previous prime is 1425371. The next prime is 1425439. The reversal of 1425427 is 7245241.

It is a strong prime.

It is an emirp because it is prime and its reverse (7245241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1425427 - 27 = 1425299 is a prime.

1425427 is a lucky number.

It is equal to p108871 and since 1425427 and 108871 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1425497) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712713 + 712714.

It is an arithmetic number, because the mean of its divisors is an integer number (712714).

21425427 is an apocalyptic number.

1425427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425427 is an equidigital number, since it uses as much as digits as its factorization.

1425427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 25.

The square root of 1425427 is about 1193.9124758541. The cubic root of 1425427 is about 112.5420945354.

The spelling of 1425427 in words is "one million, four hundred twenty-five thousand, four hundred twenty-seven".