1012002140 has 24 divisors (see below), whose sum is σ = 2165304960. Its totient is φ = 397162688.

The previous prime is 1012002137. The next prime is 1012002157. The reversal of 1012002140 is 412002101.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 476300 + ... + 478419.

It is an arithmetic number, because the mean of its divisors is an integer number (90221040).

Almost surely, 2^1012002140 is an apocalyptic number.

1012002140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012002140 is an abundant number, since it is smaller than the sum of its proper divisors (1153302820).

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

1012002140 is a wasteful number, since it uses less digits than its factorization.

1012002140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954781 (or 954779 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1012002140 is about 31811.9810763178. The cubic root of 1012002140 is about 1003.9848135034.

Adding to 1012002140 its reverse (412002101), we get a palindrome (1424004241).

The spelling of 1012002140 in words is "one billion, twelve million, two thousand, one hundred forty".