145143322 has 4 divisors (see below), whose sum is σ = 217714986. Its totient is φ = 72571660.

The previous prime is 145143311. The next prime is 145143343. The reversal of 145143322 is 223341541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223341541 = 1049 ⋅212909.

It can be written as a sum of positive squares in only one way, i.e., 115756081 + 29387241 = 10759^2 + 5421^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 36285829 + ... + 36285832.

Almost surely, 2^145143322 is an apocalyptic number.

145143322 is a deficient number, since it is larger than the sum of its proper divisors (72571664).

145143322 is an equidigital number, since it uses as much as digits as its factorization.

145143322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72571663.

The product of its digits is 2880, while the sum is 25.

The square root of 145143322 is about 12047.5442310871. The cubic root of 145143322 is about 525.5318232899.

Adding to 145143322 its reverse (223341541), we get a palindrome (368484863).

The spelling of 145143322 in words is "one hundred forty-five million, one hundred forty-three thousand, three hundred twenty-two".