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1269201 = 3423067
BaseRepresentation
bin100110101110111010001
32101111000110
410311313101
5311103301
643111533
713534203
oct4656721
92344013
101269201
1179762a
125125a9
1335590b
14250773
151a10d6
hex135dd1

1269201 has 4 divisors (see below), whose sum is σ = 1692272. Its totient is φ = 846132.

The previous prime is 1269197. The next prime is 1269221. The reversal of 1269201 is 1029621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1269201 - 22 = 1269197 is a prime.

It is a super-2 number, since 2×12692012 = 3221742356802, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

1269201 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1269221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211531 + ... + 211536.

It is an arithmetic number, because the mean of its divisors is an integer number (423068).

21269201 is an apocalyptic number.

It is an amenable number.

1269201 is a deficient number, since it is larger than the sum of its proper divisors (423071).

1269201 is an equidigital number, since it uses as much as digits as its factorization.

1269201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423070.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1269201 is about 1126.5882122586. The cubic root of 1269201 is about 108.2704982099.

The spelling of 1269201 in words is "one million, two hundred sixty-nine thousand, two hundred one".

Divisors: 1 3 423067 1269201