145243234 has 4 divisors (see below), whose sum is σ = 217864854. Its totient is φ = 72621616.

The previous prime is 145243199. The next prime is 145243247. The reversal of 145243234 is 432342541.

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: 432342541 = 1109 ⋅389849.

It can be written as a sum of positive squares in only one way, i.e., 81993025 + 63250209 = 9055^2 + 7953^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 36310807 + ... + 36310810.

Almost surely, 2^145243234 is an apocalyptic number.

145243234 is a deficient number, since it is larger than the sum of its proper divisors (72621620).

145243234 is an equidigital number, since it uses as much as digits as its factorization.

145243234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72621619.

The product of its digits is 11520, while the sum is 28.

The square root of 145243234 is about 12051.6900889460. The cubic root of 145243234 is about 525.6523820392.

Adding to 145243234 its reverse (432342541), we get a palindrome (577585775).

The spelling of 145243234 in words is "one hundred forty-five million, two hundred forty-three thousand, two hundred thirty-four".