1004120019 has 12 divisors (see below), whose sum is σ = 1657595056. Its totient is φ = 573782832.

The previous prime is 1004120003. The next prime is 1004120027. The reversal of 1004120019 is 9100214001.

It is not a de Polignac number, because 1004120019 - 2⁴ = 1004120003 is a prime.

It is a super-2 number, since 2×1004120019² = 2016514025113120722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1004119983 and 1004120010.

It is not an unprimeable number, because it can be changed into a prime (1004120069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7969144 + ... + 7969269.

Almost surely, 2^1004120019 is an apocalyptic number.

1004120019 is a deficient number, since it is larger than the sum of its proper divisors (653475037).

1004120019 is a wasteful number, since it uses less digits than its factorization.

1004120019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15938426 (or 15938423 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1004120019 is about 31687.8528619406. The cubic root of 1004120019 is about 1001.3714579100.

The spelling of 1004120019 in words is "one billion, four million, one hundred twenty thousand, nineteen".