1210261 has 4 divisors (see below), whose sum is σ = 1303372. Its totient is φ = 1117152.

The previous prime is 1210259. The next prime is 1210289. The reversal of 1210261 is 1620121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 269361 + 940900 = 519^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210261 - 2¹ = 1210259 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 93097 = 1210261 / (1 + 2 + 1 + 0 + 2 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210211) 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, 46536 + ... + 46561.

It is an arithmetic number, because the mean of its divisors is an integer number (325843).

2^1210261 is an apocalyptic number.

It is an amenable number.

1210261 is a deficient number, since it is larger than the sum of its proper divisors (93111).

1210261 is an equidigital number, since it uses as much as digits as its factorization.

1210261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93110.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1210261 is about 1100.1186299668. The cubic root of 1210261 is about 106.5678848940.

Adding to 1210261 its reverse (1620121), we get a palindrome (2830382).

The spelling of 1210261 in words is "one million, two hundred ten thousand, two hundred sixty-one".