1286053021 has 4 divisors (see below), whose sum is σ = 1402966944. Its totient is φ = 1169139100.

The previous prime is 1286052979. The next prime is 1286053037. The reversal of 1286053021 is 1203506821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1286053021 - 2⁷ = 1286052893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286053051) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 58456945 + ... + 58456966.

It is an arithmetic number, because the mean of its divisors is an integer number (350741736).

Almost surely, 2^1286053021 is an apocalyptic number.

1286053021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1286053021 is a deficient number, since it is larger than the sum of its proper divisors (116913923).

1286053021 is a wasteful number, since it uses less digits than its factorization.

1286053021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116913922.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1286053021 is about 35861.5814068482. The cubic root of 1286053021 is about 1087.4758586441.

Adding to 1286053021 its reverse (1203506821), we get a palindrome (2489559842).

The spelling of 1286053021 in words is "one billion, two hundred eighty-six million, fifty-three thousand, twenty-one".