1020012004 has 48 divisors (see below), whose sum is σ = 2086955136. Its totient is φ = 431481600.

The previous prime is 1020011999. The next prime is 1020012013. The reversal of 1020012004 is 4002100201.

1020012004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23824 + ... + 51064.

It is an arithmetic number, because the mean of its divisors is an integer number (43478232).

Almost surely, 2^1020012004 is an apocalyptic number.

It is an amenable number.

1020012004 is an abundant number, since it is smaller than the sum of its proper divisors (1066943132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020012004 is a wasteful number, since it uses less digits than its factorization.

1020012004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27316 (or 27314 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1020012004 is about 31937.6267746995. The cubic root of 1020012004 is about 1006.6266584005.

Adding to 1020012004 its reverse (4002100201), we get a palindrome (5022112205).

The spelling of 1020012004 in words is "one billion, twenty million, twelve thousand, four".