1090071421 has 8 divisors (see below), whose sum is σ = 1093366400. Its totient is φ = 1086782832.

The previous prime is 1090071379. The next prime is 1090071431. The reversal of 1090071421 is 1241700901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1090071421 - 2⁷ = 1090071293 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 (1090071431) 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 7 ways as a sum of consecutive naturals, for example, 778480 + ... + 779878.

It is an arithmetic number, because the mean of its divisors is an integer number (136670800).

Almost surely, 2^1090071421 is an apocalyptic number.

It is an amenable number.

1090071421 is a deficient number, since it is larger than the sum of its proper divisors (3294979).

1090071421 is a wasteful number, since it uses less digits than its factorization.

1090071421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3195.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 1090071421 is about 33016.2296605775. The cubic root of 1090071421 is about 1029.1649438739.

The spelling of 1090071421 in words is "one billion, ninety million, seventy-one thousand, four hundred twenty-one".