145123346 has 4 divisors (see below), whose sum is σ = 217685022. Its totient is φ = 72561672.

The previous prime is 145123327. The next prime is 145123411. The reversal of 145123346 is 643321541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 123454321 + 21669025 = 11111^2 + 4655^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36280835 + ... + 36280838.

Almost surely, 2^145123346 is an apocalyptic number.

145123346 is a deficient number, since it is larger than the sum of its proper divisors (72561676).

145123346 is an equidigital number, since it uses as much as digits as its factorization.

145123346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72561675.

The product of its digits is 8640, while the sum is 29.

The square root of 145123346 is about 12046.7151539330. The cubic root of 145123346 is about 525.5077126265.

Adding to 145123346 its reverse (643321541), we get a palindrome (788444887).

The spelling of 145123346 in words is "one hundred forty-five million, one hundred twenty-three thousand, three hundred forty-six".