1201599 has 12 divisors (see below), whose sum is σ = 1983696. Its totient is φ = 686592.

The previous prime is 1201583. The next prime is 1201601. The reversal of 1201599 is 9951021.

It is a happy number.

It is not a de Polignac number, because 1201599 - 2⁴ = 1201583 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9474 + ... + 9599.

It is an arithmetic number, because the mean of its divisors is an integer number (165308).

2^1201599 is an apocalyptic number.

1201599 is a deficient number, since it is larger than the sum of its proper divisors (782097).

1201599 is a wasteful number, since it uses less digits than its factorization.

1201599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19086 (or 19083 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 1201599 is about 1096.1747123520. The cubic root of 1201599 is about 106.3130357207.

The spelling of 1201599 in words is "one million, two hundred one thousand, five hundred ninety-nine".