145405203 has 16 divisors (see below), whose sum is σ = 196624896. Its totient is φ = 95569920.

The previous prime is 145405193. The next prime is 145405213. The reversal of 145405203 is 302504541.

It is an interprime number because it is at equal distance from previous prime (145405193) and next prime (145405213).

It is not a de Polignac number, because 145405203 - 2⁴ = 145405187 is a prime.

It is a super-2 number, since 2×145405203² = 42285346118942418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145405213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78498 + ... + 80328.

It is an arithmetic number, because the mean of its divisors is an integer number (12289056).

Almost surely, 2^145405203 is an apocalyptic number.

145405203 is a deficient number, since it is larger than the sum of its proper divisors (51219693).

145405203 is a wasteful number, since it uses less digits than its factorization.

145405203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 145405203 is about 12058.4079794971. The cubic root of 145405203 is about 525.8477044190.

Adding to 145405203 its reverse (302504541), we get a palindrome (447909744).

The spelling of 145405203 in words is "one hundred forty-five million, four hundred five thousand, two hundred three".