1082047821 has 4 divisors (see below), whose sum is σ = 1442730432. Its totient is φ = 721365212.

The previous prime is 1082047801. The next prime is 1082047823. The reversal of 1082047821 is 1287402801.

It is a happy number.

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 1082047821 - 2¹¹ = 1082045773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1082047823) 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, 180341301 + ... + 180341306.

It is an arithmetic number, because the mean of its divisors is an integer number (360682608).

Almost surely, 2^1082047821 is an apocalyptic number.

It is an amenable number.

1082047821 is a deficient number, since it is larger than the sum of its proper divisors (360682611).

1082047821 is an equidigital number, since it uses as much as digits as its factorization.

1082047821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360682610.

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 1082047821 is about 32894.4952993658. The cubic root of 1082047821 is about 1026.6336261059.

The spelling of 1082047821 in words is "one billion, eighty-two million, forty-seven thousand, eight hundred twenty-one".