1012003405 has 8 divisors (see below), whose sum is σ = 1387890432. Its totient is φ = 693945168.

The previous prime is 1012003397. The next prime is 1012003411. The reversal of 1012003405 is 5043002101.

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

It is not a de Polignac number, because 1012003405 - 2³ = 1012003397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14457157 + ... + 14457226.

It is an arithmetic number, because the mean of its divisors is an integer number (173486304).

Almost surely, 2^1012003405 is an apocalyptic number.

It is an amenable number.

1012003405 is a deficient number, since it is larger than the sum of its proper divisors (375887027).

1012003405 is an equidigital number, since it uses as much as digits as its factorization.

1012003405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28914395.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1012003405 is about 31812.0009587577. Note that the first 3 decimals coincide. The cubic root of 1012003405 is about 1003.9852318294.

Adding to 1012003405 its reverse (5043002101), we get a palindrome (6055005506).

The spelling of 1012003405 in words is "one billion, twelve million, three thousand, four hundred five".