1002005122 has 8 divisors (see below), whose sum is σ = 1513978956. Its totient is φ = 497345472.

The previous prime is 1002005117. The next prime is 1002005141. The reversal of 1002005122 is 2215002001.

1002005122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 998623201 + 3381921 = 31601^2 + 1839^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 1828203 + ... + 1828750.

Almost surely, 2^1002005122 is an apocalyptic number.

1002005122 is a deficient number, since it is larger than the sum of its proper divisors (511973834).

1002005122 is a wasteful number, since it uses less digits than its factorization.

1002005122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3657092.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1002005122 is about 31654.4644876517. The cubic root of 1002005122 is about 1000.6679277732.

Adding to 1002005122 its reverse (2215002001), we get a palindrome (3217007123).

The spelling of 1002005122 in words is "one billion, two million, five thousand, one hundred twenty-two".