1004120001 has 6 divisors (see below), whose sum is σ = 1450395570. Its totient is φ = 669413328.

The previous prime is 1004119979. The next prime is 1004120003. The reversal of 1004120001 is 1000214001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 843844401 + 160275600 = 29049^2 + 12660^2 .

It is not a de Polignac number, because 1004120001 - 2⁵ = 1004119969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 111568889 = 1004120001 / (1 + 0 + 0 + 4 + 1 + 2 + 0 + 0 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (1004120003) 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, 55784436 + ... + 55784453.

It is an arithmetic number, because the mean of its divisors is an integer number (241732595).

Almost surely, 2^1004120001 is an apocalyptic number.

It is an amenable number.

1004120001 is a deficient number, since it is larger than the sum of its proper divisors (446275569).

1004120001 is a wasteful number, since it uses less digits than its factorization.

1004120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111568895 (or 111568892 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1004120001 is about 31687.8525779201. The cubic root of 1004120001 is about 1001.3714519264.

Adding to 1004120001 its reverse (1000214001), we get a palindrome (2004334002).

The spelling of 1004120001 in words is "one billion, four million, one hundred twenty thousand, one".