1205541 has 6 divisors (see below), whose sum is σ = 1741350. Its totient is φ = 803688.

The previous prime is 1205539. The next prime is 1205549. The reversal of 1205541 is 1455021.

1205541 is a `hidden beast` number, since 120 + 5 + 541 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1102500 + 103041 = 1050^2 + 321^2 .

It is not a de Polignac number, because 1205541 - 2¹ = 1205539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205549) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66966 + ... + 66983.

It is an arithmetic number, because the mean of its divisors is an integer number (290225).

2^1205541 is an apocalyptic number.

It is an amenable number.

1205541 is a deficient number, since it is larger than the sum of its proper divisors (535809).

1205541 is a wasteful number, since it uses less digits than its factorization.

1205541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133955 (or 133952 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1205541 is about 1097.9713111006. The cubic root of 1205541 is about 106.4291666794.

The spelling of 1205541 in words is "one million, two hundred five thousand, five hundred forty-one".