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1272629 is a prime number
BaseRepresentation
bin100110110101100110101
32101122201102
410312230311
5311211004
643135445
713550201
oct4665465
92348642
101272629
1179a166
12514585
13357347
14251b01
151a211e
hex136b35

1272629 has 2 divisors, whose sum is σ = 1272630. Its totient is φ = 1272628.

The previous prime is 1272617. The next prime is 1272631. The reversal of 1272629 is 9262721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1270129 + 2500 = 1127^2 + 50^2 .

It is a cyclic number.

It is not a de Polignac number, because 1272629 - 216 = 1207093 is a prime.

Together with 1272631, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636314 + 636315.

It is an arithmetic number, because the mean of its divisors is an integer number (636315).

21272629 is an apocalyptic number.

It is an amenable number.

1272629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272629 is an equidigital number, since it uses as much as digits as its factorization.

1272629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 1272629 is about 1128.1085940635. The cubic root of 1272629 is about 108.3678869396.

The spelling of 1272629 in words is "one million, two hundred seventy-two thousand, six hundred twenty-nine".