145404143 has 4 divisors (see below), whose sum is σ = 147868680. Its totient is φ = 142939608.

The previous prime is 145404139. The next prime is 145404151. The reversal of 145404143 is 341404541.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 145404143 - 2² = 145404139 is a prime.

It is a super-2 number, since 2×145404143² = 42284729603128898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145404443) 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, 1232180 + ... + 1232297.

It is an arithmetic number, because the mean of its divisors is an integer number (36967170).

Almost surely, 2^145404143 is an apocalyptic number.

145404143 is a deficient number, since it is larger than the sum of its proper divisors (2464537).

145404143 is an equidigital number, since it uses as much as digits as its factorization.

145404143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464536.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 145404143 is about 12058.3640266829. The cubic root of 145404143 is about 525.8464266107.

Adding to 145404143 its reverse (341404541), we get a palindrome (486808684).

The spelling of 145404143 in words is "one hundred forty-five million, four hundred four thousand, one hundred forty-three".