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1245397 is a prime number
BaseRepresentation
bin100110000000011010101
32100021100211
410300003111
5304323042
642405421
713404616
oct4600325
92307324
101245397
1178075a
12500871
13347b2a
14245c0d
15199017
hex1300d5

1245397 has 2 divisors, whose sum is σ = 1245398. Its totient is φ = 1245396.

The previous prime is 1245379. The next prime is 1245401. The reversal of 1245397 is 7935421.

Together with previous prime (1245379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1052676 + 192721 = 1026^2 + 439^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245397 - 211 = 1243349 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1246397) 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, 622698 + 622699.

It is an arithmetic number, because the mean of its divisors is an integer number (622699).

21245397 is an apocalyptic number.

It is an amenable number.

1245397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245397 is an equidigital number, since it uses as much as digits as its factorization.

1245397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 1245397 is about 1115.9735659952. The cubic root of 1245397 is about 107.5893470288.

The spelling of 1245397 in words is "one million, two hundred forty-five thousand, three hundred ninety-seven".