1002203245 has 4 divisors (see below), whose sum is σ = 1202643900. Its totient is φ = 801762592.

The previous prime is 1002203207. The next prime is 1002203281. The reversal of 1002203245 is 5423022001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5423022001 = 9743 ⋅556607.

It can be written as a sum of positive squares in 2 ways, for example, as 375351876 + 626851369 = 19374^2 + 25037^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002203245 - 2⁷ = 1002203117 is a prime.

It is a super-2 number, since 2×1002203245² = 2008822688577060050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100220320 + ... + 100220329.

It is an arithmetic number, because the mean of its divisors is an integer number (300660975).

Almost surely, 2^1002203245 is an apocalyptic number.

It is an amenable number.

1002203245 is a deficient number, since it is larger than the sum of its proper divisors (200440655).

1002203245 is an equidigital number, since it uses as much as digits as its factorization.

1002203245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200440654.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 1002203245 is about 31657.5937967496. The cubic root of 1002203245 is about 1000.7338762938.

Adding to 1002203245 its reverse (5423022001), we get a palindrome (6425225246).

The spelling of 1002203245 in words is "one billion, two million, two hundred three thousand, two hundred forty-five".