1261045 has 4 divisors (see below), whose sum is σ = 1513260. Its totient is φ = 1008832.

The previous prime is 1261033. The next prime is 1261069. The reversal of 1261045 is 5401621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5401621 = 283 ⋅19087.

It can be written as a sum of positive squares in 2 ways, for example, as 908209 + 352836 = 953^2 + 594^2 .

It is a cyclic number.

It is not a de Polignac number, because 1261045 - 2¹⁵ = 1228277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126100 + ... + 126109.

It is an arithmetic number, because the mean of its divisors is an integer number (378315).

2^1261045 is an apocalyptic number.

It is an amenable number.

1261045 is a deficient number, since it is larger than the sum of its proper divisors (252215).

1261045 is an equidigital number, since it uses as much as digits as its factorization.

1261045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252214.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1261045 is about 1122.9625995553. The cubic root of 1261045 is about 108.0380809926.

Adding to 1261045 its reverse (5401621), we get a palindrome (6662666).

The spelling of 1261045 in words is "one million, two hundred sixty-one thousand, forty-five".