1261043 has 8 divisors (see below), whose sum is σ = 1526112. Its totient is φ = 1017216.

The previous prime is 1261033. The next prime is 1261069. The reversal of 1261043 is 3401621.

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 1261043 - 2⁶ = 1260979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (1261033) 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, 5180 + ... + 5417.

It is an arithmetic number, because the mean of its divisors is an integer number (190764).

2^1261043 is an apocalyptic number.

1261043 is a deficient number, since it is larger than the sum of its proper divisors (265069).

1261043 is a wasteful number, since it uses less digits than its factorization.

1261043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10621.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1261043 is about 1122.9617090533. The cubic root of 1261043 is about 108.0380238769.

Adding to 1261043 its reverse (3401621), we get a palindrome (4662664).

The spelling of 1261043 in words is "one million, two hundred sixty-one thousand, forty-three".