1240004001 has 8 divisors (see below), whose sum is σ = 1653753024. Its totient is φ = 826462160.

The previous prime is 1240003993. The next prime is 1240004009. The reversal of 1240004001 is 1004000421.

It is an interprime number because it is at equal distance from previous prime (1240003993) and next prime (1240004009).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1240004001 - 2³ = 1240003993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1240004009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37245 + ... + 62186.

It is an arithmetic number, because the mean of its divisors is an integer number (206719128).

Almost surely, 2^1240004001 is an apocalyptic number.

It is an amenable number.

1240004001 is a deficient number, since it is larger than the sum of its proper divisors (413749023).

1240004001 is an equidigital number, since it uses as much as digits as its factorization.

1240004001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103591.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1240004001 is about 35213.6905336547. The cubic root of 1240004001 is about 1074.3382264777.

Adding to 1240004001 its reverse (1004000421), we get a palindrome (2244004422).

The spelling of 1240004001 in words is "one billion, two hundred forty million, four thousand, one".