1285073043 has 16 divisors (see below), whose sum is σ = 1788771840. Its totient is φ = 819080064.

The previous prime is 1285073029. The next prime is 1285073059. The reversal of 1285073043 is 3403705821.

It is not a de Polignac number, because 1285073043 - 2⁶ = 1285072979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1285072995 and 1285073013.

It is not an unprimeable number, because it can be changed into a prime (1285073243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242955 + ... + 248187.

It is an arithmetic number, because the mean of its divisors is an integer number (111798240).

Almost surely, 2^1285073043 is an apocalyptic number.

1285073043 is a deficient number, since it is larger than the sum of its proper divisors (503698797).

1285073043 is a wasteful number, since it uses less digits than its factorization.

1285073043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8818.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 1285073043 is about 35847.9154624087. The cubic root of 1285073043 is about 1087.1995680080.

Adding to 1285073043 its reverse (3403705821), we get a palindrome (4688778864).

The spelling of 1285073043 in words is "one billion, two hundred eighty-five million, seventy-three thousand, forty-three".