1203261 has 4 divisors (see below), whose sum is σ = 1604352. Its totient is φ = 802172.

The previous prime is 1203233. The next prime is 1203263. The reversal of 1203261 is 1623021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1623021 = 3 ⋅541007.

It is a cyclic number.

It is not a de Polignac number, because 1203261 - 2⁵ = 1203229 is a prime.

It is a D-number.

1203261 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1203261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203263) 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 3 ways as a sum of consecutive naturals, for example, 200541 + ... + 200546.

It is an arithmetic number, because the mean of its divisors is an integer number (401088).

2^1203261 is an apocalyptic number.

It is an amenable number.

1203261 is a deficient number, since it is larger than the sum of its proper divisors (401091).

1203261 is an equidigital number, since it uses as much as digits as its factorization.

1203261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401090.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1203261 is about 1096.9325412258. The cubic root of 1203261 is about 106.3620290103.

Adding to 1203261 its reverse (1623021), we get a palindrome (2826282).

The spelling of 1203261 in words is "one million, two hundred three thousand, two hundred sixty-one".