202145345 has 4 divisors (see below), whose sum is σ = 242574420. Its totient is φ = 161716272.

The previous prime is 202145323. The next prime is 202145347. The reversal of 202145345 is 543541202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543541202 = 2 ⋅271770601.

It can be written as a sum of positive squares in 2 ways, for example, as 47789569 + 154355776 = 6913^2 + 12424^2 .

It is a cyclic number.

It is not a de Polignac number, because 202145345 - 2²⁰ = 201096769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202145347) 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, 20214530 + ... + 20214539.

It is an arithmetic number, because the mean of its divisors is an integer number (60643605).

Almost surely, 2^202145345 is an apocalyptic number.

It is an amenable number.

202145345 is a deficient number, since it is larger than the sum of its proper divisors (40429075).

202145345 is an equidigital number, since it uses as much as digits as its factorization.

202145345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40429074.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 202145345 is about 14217.7827033613. The cubic root of 202145345 is about 586.8871242670.

Adding to 202145345 its reverse (543541202), we get a palindrome (745686547).

The spelling of 202145345 in words is "two hundred two million, one hundred forty-five thousand, three hundred forty-five".