4003001012 has 12 divisors (see below), whose sum is σ = 7006764996. Its totient is φ = 2001068160.

The previous prime is 4003001003. The next prime is 4003001027. The reversal of 4003001012 is 2101003004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 307090576 + 3695910436 = 17524^2 + 60794^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4003000984 and 4003001002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86789 + ... + 124652.

It is an arithmetic number, because the mean of its divisors is an integer number (583897083).

Almost surely, 2^4003001012 is an apocalyptic number.

It is an amenable number.

4003001012 is a deficient number, since it is larger than the sum of its proper divisors (3003763984).

4003001012 is a wasteful number, since it uses less digits than its factorization.

4003001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216178 (or 216176 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 4003001012 is about 63269.2738380962. The cubic root of 4003001012 is about 1587.7979368639.

Adding to 4003001012 its reverse (2101003004), we get a palindrome (6104004016).

The spelling of 4003001012 in words is "four billion, three million, one thousand, twelve".