1075660421 has 4 divisors (see below), whose sum is σ = 1173447744. Its totient is φ = 977873100.

The previous prime is 1075660321. The next prime is 1075660427. The reversal of 1075660421 is 1240665701.

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 1075660421 - 2²² = 1071466117 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 (1075660427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48893645 + ... + 48893666.

It is an arithmetic number, because the mean of its divisors is an integer number (293361936).

Almost surely, 2^1075660421 is an apocalyptic number.

1075660421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1075660421 is a deficient number, since it is larger than the sum of its proper divisors (97787323).

1075660421 is an equidigital number, since it uses as much as digits as its factorization.

1075660421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97787322.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1075660421 is about 32797.2624009993. The cubic root of 1075660421 is about 1024.6095426546.

The spelling of 1075660421 in words is "one billion, seventy-five million, six hundred sixty thousand, four hundred twenty-one".