1200071 has 4 divisors (see below), whose sum is σ = 1252272. Its totient is φ = 1147872.

The previous prime is 1200061. The next prime is 1200077. The reversal of 1200071 is 1700021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1200071 - 2⁶ = 1200007 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26066 + ... + 26111.

It is an arithmetic number, because the mean of its divisors is an integer number (313068).

2^1200071 is an apocalyptic number.

1200071 is a deficient number, since it is larger than the sum of its proper divisors (52201).

1200071 is an equidigital number, since it uses as much as digits as its factorization.

1200071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52200.

The product of its (nonzero) digits is 14, while the sum is 11.

The square root of 1200071 is about 1095.4775214490. The cubic root of 1200071 is about 106.2679526758.

Adding to 1200071 its reverse (1700021), we get a palindrome (2900092).

The spelling of 1200071 in words is "one million, two hundred thousand, seventy-one".