1240454043 has 12 divisors (see below), whose sum is σ = 1792079640. Its totient is φ = 826825056.

The previous prime is 1240454027. The next prime is 1240454063. The reversal of 1240454043 is 3404540421.

It is a happy number.

It is not a de Polignac number, because 1240454043 - 2⁴ = 1240454027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1240453998 and 1240454016.

It is not an unprimeable number, because it can be changed into a prime (1240454063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77455 + ... + 92087.

It is an arithmetic number, because the mean of its divisors is an integer number (149339970).

Almost surely, 2^1240454043 is an apocalyptic number.

1240454043 is a deficient number, since it is larger than the sum of its proper divisors (551625597).

1240454043 is a wasteful number, since it uses less digits than its factorization.

1240454043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24058 (or 24055 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 1240454043 is about 35220.0801106414. The cubic root of 1240454043 is about 1074.4681827366.

Adding to 1240454043 its reverse (3404540421), we get a palindrome (4644994464).

The spelling of 1240454043 in words is "one billion, two hundred forty million, four hundred fifty-four thousand, forty-three".