1240045 has 16 divisors (see below), whose sum is σ = 1596672. Its totient is φ = 922240.

The previous prime is 1240039. The next prime is 1240081. The reversal of 1240045 is 5400421.

It is not a de Polignac number, because 1240045 - 2⁵ = 1240013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4584 + ... + 4846.

It is an arithmetic number, because the mean of its divisors is an integer number (99792).

2^1240045 is an apocalyptic number.

It is an amenable number.

1240045 is a deficient number, since it is larger than the sum of its proper divisors (356627).

1240045 is a wasteful number, since it uses less digits than its factorization.

1240045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1240045 is about 1113.5730779792. The cubic root of 1240045 is about 107.4350066845.

Adding to 1240045 its reverse (5400421), we get a palindrome (6640466).

The spelling of 1240045 in words is "one million, two hundred forty thousand, forty-five".