1170203421 has 4 divisors (see below), whose sum is σ = 1560271232. Its totient is φ = 780135612.

The previous prime is 1170203393. The next prime is 1170203491. The reversal of 1170203421 is 1243020711.

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 not a de Polignac number, because 1170203421 - 2⁶ = 1170203357 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 (1170203491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195033901 + ... + 195033906.

It is an arithmetic number, because the mean of its divisors is an integer number (390067808).

Almost surely, 2^1170203421 is an apocalyptic number.

It is an amenable number.

1170203421 is a deficient number, since it is larger than the sum of its proper divisors (390067811).

1170203421 is an equidigital number, since it uses as much as digits as its factorization.

1170203421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390067810.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1170203421 is about 34208.2361573934. The cubic root of 1170203421 is about 1053.7893079959.

The spelling of 1170203421 in words is "one billion, one hundred seventy million, two hundred three thousand, four hundred twenty-one".