1200491 has 2 divisors, whose sum is σ = 1200492. Its totient is φ = 1200490.

The previous prime is 1200467. The next prime is 1200499. The reversal of 1200491 is 1940021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1200491 - 2¹⁰ = 1199467 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600245 + 600246.

It is an arithmetic number, because the mean of its divisors is an integer number (600246).

2^1200491 is an apocalyptic number.

1200491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200491 is an equidigital number, since it uses as much as digits as its factorization.

1200491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1200491 is about 1095.6692019036. The cubic root of 1200491 is about 106.2803484241.

The spelling of 1200491 in words is "one million, two hundred thousand, four hundred ninety-one".