1285700073 has 12 divisors (see below), whose sum is σ = 1994147280. Its totient is φ = 734685672.

The previous prime is 1285700071. The next prime is 1285700081. The reversal of 1285700073 is 3700075821.

It is not a de Polignac number, because 1285700073 - 2¹ = 1285700071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1285700071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4372983 + ... + 4373276.

It is an arithmetic number, because the mean of its divisors is an integer number (166178940).

Almost surely, 2^1285700073 is an apocalyptic number.

It is an amenable number.

1285700073 is a deficient number, since it is larger than the sum of its proper divisors (708447207).

1285700073 is an equidigital number, since it uses as much as digits as its factorization.

1285700073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8746276 (or 8746269 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 1285700073 is about 35856.6600926522. The cubic root of 1285700073 is about 1087.3763662331.

Adding to 1285700073 its reverse (3700075821), we get a palindrome (4985775894).

The spelling of 1285700073 in words is "one billion, two hundred eighty-five million, seven hundred thousand, seventy-three".