1244000001 has 8 divisors (see below), whose sum is σ = 1658962944. Its totient is φ = 829185200.

The previous prime is 1243999997. The next prime is 1244000003. The reversal of 1244000001 is 1000004421.

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 1244000001 - 2² = 1243999997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1244000003) 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, 15681 + ... + 52286.

It is an arithmetic number, because the mean of its divisors is an integer number (207370368).

Almost surely, 2^1244000001 is an apocalyptic number.

It is an amenable number.

1244000001 is a deficient number, since it is larger than the sum of its proper divisors (414962943).

1244000001 is an equidigital number, since it uses as much as digits as its factorization.

1244000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74071.

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

The square root of 1244000001 is about 35270.3841912730. The cubic root of 1244000001 is about 1075.4910324983.

Adding to 1244000001 its reverse (1000004421), we get a palindrome (2244004422).

The spelling of 1244000001 in words is "one billion, two hundred forty-four million, one", and thus it is an aban number.