1020144203 has 4 divisors (see below), whose sum is σ = 1098616848. Its totient is φ = 941671560.

The previous prime is 1020144197. The next prime is 1020144217. The reversal of 1020144203 is 3024410201.

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-1020144203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020144233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39236303 + ... + 39236328.

It is an arithmetic number, because the mean of its divisors is an integer number (274654212).

Almost surely, 2^1020144203 is an apocalyptic number.

1020144203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1020144203 is a deficient number, since it is larger than the sum of its proper divisors (78472645).

1020144203 is an equidigital number, since it uses as much as digits as its factorization.

1020144203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78472644.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1020144203 is about 31939.6963510926. The cubic root of 1020144203 is about 1006.6701445845.

Adding to 1020144203 its reverse (3024410201), we get a palindrome (4044554404).

The spelling of 1020144203 in words is "one billion, twenty million, one hundred forty-four thousand, two hundred three".