145172234 has 8 divisors (see below), whose sum is σ = 217809540. Its totient is φ = 72569056.

The previous prime is 145172233. The next prime is 145172239. The reversal of 145172234 is 432271541.

It can be written as a sum of positive squares in 2 ways, for example, as 145130209 + 42025 = 12047^2 + 205^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 145172197 and 145172206.

It is not an unprimeable number, because it can be changed into a prime (145172233) 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, 11702 + ... + 20670.

Almost surely, 2^145172234 is an apocalyptic number.

145172234 is a deficient number, since it is larger than the sum of its proper divisors (72637306).

145172234 is an equidigital number, since it uses as much as digits as its factorization.

145172234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17064.

The product of its digits is 6720, while the sum is 29.

The square root of 145172234 is about 12048.7440839284. The cubic root of 145172234 is about 525.5667156228.

The spelling of 145172234 in words is "one hundred forty-five million, one hundred seventy-two thousand, two hundred thirty-four".