1209501 has 12 divisors (see below), whose sum is σ = 1823328. Its totient is φ = 771144.

The previous prime is 1209491. The next prime is 1209517. The reversal of 1209501 is 1059021.

It is not a de Polignac number, because 1209501 - 2⁵ = 1209469 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2715 + ... + 3128.

It is an arithmetic number, because the mean of its divisors is an integer number (151944).

2^1209501 is an apocalyptic number.

It is an amenable number.

1209501 is a deficient number, since it is larger than the sum of its proper divisors (613827).

1209501 is a wasteful number, since it uses less digits than its factorization.

1209501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5872 (or 5869 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1209501 is about 1099.7731584286. The cubic root of 1209501 is about 106.5455733012.

The spelling of 1209501 in words is "one million, two hundred nine thousand, five hundred one".