145321443 has 12 divisors (see below), whose sum is σ = 220956840. Its totient is φ = 91781856.

The previous prime is 145321441. The next prime is 145321447. The reversal of 145321443 is 344123541.

It is a happy number.

It is not a de Polignac number, because 145321443 - 2¹ = 145321441 is a prime.

It is a super-2 number, since 2×145321443² = 42236643591204498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145321441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 424746 + ... + 425087.

It is an arithmetic number, because the mean of its divisors is an integer number (18413070).

Almost surely, 2^145321443 is an apocalyptic number.

145321443 is a deficient number, since it is larger than the sum of its proper divisors (75635397).

145321443 is a wasteful number, since it uses less digits than its factorization.

145321443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849858 (or 849855 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 145321443 is about 12054.9343838944. The cubic root of 145321443 is about 525.7467143058.

Adding to 145321443 its reverse (344123541), we get a palindrome (489444984).

The spelling of 145321443 in words is "one hundred forty-five million, three hundred twenty-one thousand, four hundred forty-three".