1240043 has 6 divisors (see below), whose sum is σ = 1442556. Its totient is φ = 1062852.

The previous prime is 1240039. The next prime is 1240081. The reversal of 1240043 is 3400421.

It is not a de Polignac number, because 1240043 - 2² = 1240039 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1240013) 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, 12605 + ... + 12702.

It is an arithmetic number, because the mean of its divisors is an integer number (240426).

2^1240043 is an apocalyptic number.

1240043 is a deficient number, since it is larger than the sum of its proper divisors (202513).

1240043 is an equidigital number, since it uses as much as digits as its factorization.

1240043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25321 (or 25314 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1240043 is about 1113.5721799686. The cubic root of 1240043 is about 107.4349489258.

Adding to 1240043 its reverse (3400421), we get a palindrome (4640464).

The spelling of 1240043 in words is "one million, two hundred forty thousand, forty-three".