143452745 has 4 divisors (see below), whose sum is σ = 172143300. Its totient is φ = 114762192.

The previous prime is 143452733. The next prime is 143452759. The reversal of 143452745 is 547254341.

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

It can be written as a sum of positive squares in 2 ways, for example, as 80425024 + 63027721 = 8968^2 + 7939^2 .

It is a cyclic number.

It is not a de Polignac number, because 143452745 - 2²⁴ = 126675529 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14345270 + ... + 14345279.

It is an arithmetic number, because the mean of its divisors is an integer number (43035825).

Almost surely, 2^143452745 is an apocalyptic number.

It is an amenable number.

143452745 is a deficient number, since it is larger than the sum of its proper divisors (28690555).

143452745 is an equidigital number, since it uses as much as digits as its factorization.

143452745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28690554.

The product of its digits is 67200, while the sum is 35.

The square root of 143452745 is about 11977.1760027145. The cubic root of 143452745 is about 523.4834480405.

The spelling of 143452745 in words is "one hundred forty-three million, four hundred fifty-two thousand, seven hundred forty-five".