145123003 has 4 divisors (see below), whose sum is σ = 145343880. Its totient is φ = 144902128.

The previous prime is 145122941. The next prime is 145123019. The reversal of 145123003 is 300321541.

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

It is a cyclic number.

It is not a de Polignac number, because 145123003 - 2²¹ = 143025851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145123073) 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, 109450 + ... + 110767.

It is an arithmetic number, because the mean of its divisors is an integer number (36335970).

Almost surely, 2^145123003 is an apocalyptic number.

145123003 is a deficient number, since it is larger than the sum of its proper divisors (220877).

145123003 is an equidigital number, since it uses as much as digits as its factorization.

145123003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220876.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 145123003 is about 12046.7009176787. The cubic root of 145123003 is about 525.5072986125.

Adding to 145123003 its reverse (300321541), we get a palindrome (445444544).

The spelling of 145123003 in words is "one hundred forty-five million, one hundred twenty-three thousand, three".