145105203 has 8 divisors (see below), whose sum is σ = 199714816. Its totient is φ = 93616200.

The previous prime is 145105199. The next prime is 145105243. The reversal of 145105203 is 302501541.

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

It is not a de Polignac number, because 145105203 - 2² = 145105199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145105203.

It is not an unprimeable number, because it can be changed into a prime (145105243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780043 + ... + 780228.

It is an arithmetic number, because the mean of its divisors is an integer number (24964352).

Almost surely, 2^145105203 is an apocalyptic number.

145105203 is a deficient number, since it is larger than the sum of its proper divisors (54609613).

145105203 is a wasteful number, since it uses less digits than its factorization.

145105203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560305.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 145105203 is about 12045.9621035432. The cubic root of 145105203 is about 525.4858124429.

Adding to 145105203 its reverse (302501541), we get a palindrome (447606744).

The spelling of 145105203 in words is "one hundred forty-five million, one hundred five thousand, two hundred three".