1012002145 has 24 divisors (see below), whose sum is σ = 1541101248. Its totient is φ = 630856800.

The previous prime is 1012002137. The next prime is 1012002157. The reversal of 1012002145 is 5412002101.

It is not a de Polignac number, because 1012002145 - 2³ = 1012002137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 185061 + ... + 190450.

It is an arithmetic number, because the mean of its divisors is an integer number (64212552).

Almost surely, 2^1012002145 is an apocalyptic number.

It is an amenable number.

1012002145 is a deficient number, since it is larger than the sum of its proper divisors (529099103).

1012002145 is a wasteful number, since it uses less digits than its factorization.

1012002145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375541 (or 375534 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1012002145 is about 31811.9811549045. The cubic root of 1012002145 is about 1003.9848151569.

Adding to 1012002145 its reverse (5412002101), we get a palindrome (6424004246).

The spelling of 1012002145 in words is "one billion, twelve million, two thousand, one hundred forty-five".