1201291 has 16 divisors (see below), whose sum is σ = 1517824. Its totient is φ = 925344.

The previous prime is 1201283. The next prime is 1201307. The reversal of 1201291 is 1921021.

It is not a de Polignac number, because 1201291 - 2³ = 1201283 is a prime.

It is an Ulam number.

1201291 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1201201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3760 + ... + 4066.

It is an arithmetic number, because the mean of its divisors is an integer number (94864).

2^1201291 is an apocalyptic number.

1201291 is a deficient number, since it is larger than the sum of its proper divisors (316533).

1201291 is a wasteful number, since it uses less digits than its factorization.

1201291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1201291 is about 1096.0342147944. The cubic root of 1201291 is about 106.3039513775.

The spelling of 1201291 in words is "one million, two hundred one thousand, two hundred ninety-one".