1004120401 has 4 divisors (see below), whose sum is σ = 1004449600. Its totient is φ = 1003791204.

The previous prime is 1004120363. The next prime is 1004120443. The reversal of 1004120401 is 1040214001.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1040214001 = 563 ⋅1847627.

It is a cyclic number.

It is not a de Polignac number, because 1004120401 - 2²⁷ = 869902673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1004120461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159981 + ... + 166138.

It is an arithmetic number, because the mean of its divisors is an integer number (251112400).

Almost surely, 2^1004120401 is an apocalyptic number.

It is an amenable number.

1004120401 is a deficient number, since it is larger than the sum of its proper divisors (329199).

1004120401 is an equidigital number, since it uses as much as digits as its factorization.

1004120401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329198.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1004120401 is about 31687.8588894864. The cubic root of 1004120401 is about 1001.3715848948.

Adding to 1004120401 its reverse (1040214001), we get a palindrome (2044334402).

The spelling of 1004120401 in words is "one billion, four million, one hundred twenty thousand, four hundred one".