1092747021 has 4 divisors (see below), whose sum is σ = 1456996032. Its totient is φ = 728498012.

The previous prime is 1092747017. The next prime is 1092747049. The reversal of 1092747021 is 1207472901.

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 1092747021 - 2² = 1092747017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1092747121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182124501 + ... + 182124506.

It is an arithmetic number, because the mean of its divisors is an integer number (364249008).

Almost surely, 2^1092747021 is an apocalyptic number.

It is an amenable number.

1092747021 is a deficient number, since it is larger than the sum of its proper divisors (364249011).

1092747021 is an equidigital number, since it uses as much as digits as its factorization.

1092747021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364249010.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 1092747021 is about 33056.7242932508. The cubic root of 1092747021 is about 1030.0062905325.

The spelling of 1092747021 in words is "one billion, ninety-two million, seven hundred forty-seven thousand, twenty-one".