1236001 has 8 divisors (see below), whose sum is σ = 1374464. Its totient is φ = 1103760.

The previous prime is 1235999. The next prime is 1236017. The reversal of 1236001 is 1006321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1236001 - 2¹ = 1235999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (1236701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1131 + ... + 1936.

It is an arithmetic number, because the mean of its divisors is an integer number (171808).

2^1236001 is an apocalyptic number.

It is an amenable number.

1236001 is a deficient number, since it is larger than the sum of its proper divisors (138463).

1236001 is a wasteful number, since it uses less digits than its factorization.

1236001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3111.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1236001 is about 1111.7558185141. The cubic root of 1236001 is about 107.3180914878.

The spelling of 1236001 in words is "one million, two hundred thirty-six thousand, one".