1602421243 has 4 divisors (see below), whose sum is σ = 1636515360. Its totient is φ = 1568327128.

The previous prime is 1602421199. The next prime is 1602421253. The reversal of 1602421243 is 3421242061.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1602421243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1602421253) 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, 17046988 + ... + 17047081.

It is an arithmetic number, because the mean of its divisors is an integer number (409128840).

Almost surely, 2^1602421243 is an apocalyptic number.

1602421243 is a deficient number, since it is larger than the sum of its proper divisors (34094117).

1602421243 is an equidigital number, since it uses as much as digits as its factorization.

1602421243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34094116.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1602421243 is about 40030.2540961208. The cubic root of 1602421243 is about 1170.1967777242.

The spelling of 1602421243 in words is "one billion, six hundred two million, four hundred twenty-one thousand, two hundred forty-three".