1240541 has 4 divisors (see below), whose sum is σ = 1313532. Its totient is φ = 1167552.

The previous prime is 1240523. The next prime is 1240543. The reversal of 1240541 is 1450421.

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 729316 + 511225 = 854^2 + 715^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240541 - 2¹⁰ = 1239517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 72973 = 1240541 / (1 + 2 + 4 + 0 + 5 + 4 + 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 (1240543) 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, 36470 + ... + 36503.

It is an arithmetic number, because the mean of its divisors is an integer number (328383).

2^1240541 is an apocalyptic number.

It is an amenable number.

1240541 is a deficient number, since it is larger than the sum of its proper divisors (72991).

1240541 is an equidigital number, since it uses as much as digits as its factorization.

1240541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72990.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1240541 is about 1113.7957622473. The cubic root of 1240541 is about 107.4493289228.

Adding to 1240541 its reverse (1450421), we get a palindrome (2690962).

The spelling of 1240541 in words is "one million, two hundred forty thousand, five hundred forty-one".