143375661 has 48 divisors (see below), whose sum is σ = 245935872. Its totient is φ = 79344000.

The previous prime is 143375641. The next prime is 143375669. The reversal of 143375661 is 166573341.

It is not a de Polignac number, because 143375661 - 2¹⁴ = 143359277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143375669) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129436 + ... + 130538.

It is an arithmetic number, because the mean of its divisors is an integer number (5123664).

Almost surely, 2^143375661 is an apocalyptic number.

143375661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

143375661 is a deficient number, since it is larger than the sum of its proper divisors (102560211).

143375661 is a wasteful number, since it uses less digits than its factorization.

143375661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234 (or 1231 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 143375661 is about 11973.9576164274. The cubic root of 143375661 is about 523.3896670350.

The spelling of 143375661 in words is "one hundred forty-three million, three hundred seventy-five thousand, six hundred sixty-one".