1201287 has 4 divisors (see below), whose sum is σ = 1601720. Its totient is φ = 800856.

The previous prime is 1201283. The next prime is 1201307. The reversal of 1201287 is 7821021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1201287 - 2² = 1201283 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201283) 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, 200212 + ... + 200217.

It is an arithmetic number, because the mean of its divisors is an integer number (400430).

2^1201287 is an apocalyptic number.

1201287 is a deficient number, since it is larger than the sum of its proper divisors (400433).

1201287 is an equidigital number, since it uses as much as digits as its factorization.

1201287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400432.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1201287 is about 1096.0323900323. The cubic root of 1201287 is about 106.3038333888.

The spelling of 1201287 in words is "one million, two hundred one thousand, two hundred eighty-seven".