1240424401 has 4 divisors (see below), whose sum is σ = 1243804672. Its totient is φ = 1237044132.

The previous prime is 1240424389. The next prime is 1240424411. The reversal of 1240424401 is 1044240421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1240424401 - 2⁵ = 1240424369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240424411) 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, 1689585 + ... + 1690318.

It is an arithmetic number, because the mean of its divisors is an integer number (310951168).

Almost surely, 2^1240424401 is an apocalyptic number.

It is an amenable number.

1240424401 is a deficient number, since it is larger than the sum of its proper divisors (3380271).

1240424401 is an equidigital number, since it uses as much as digits as its factorization.

1240424401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3380270.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1240424401 is about 35219.6592970460. The cubic root of 1240424401 is about 1074.4596241394.

Adding to 1240424401 its reverse (1044240421), we get a palindrome (2284664822).

The spelling of 1240424401 in words is "one billion, two hundred forty million, four hundred twenty-four thousand, four hundred one".