143002661 has 8 divisors (see below), whose sum is σ = 149554944. Its totient is φ = 136478320.

The previous prime is 143002637. The next prime is 143002679. The reversal of 143002661 is 166200341.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-143002661 is a prime.

It is a super-2 number, since 2×143002661² = 40899522106161842, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143002061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3860 + ... + 17346.

It is an arithmetic number, because the mean of its divisors is an integer number (18694368).

Almost surely, 2^143002661 is an apocalyptic number.

It is an amenable number.

143002661 is a deficient number, since it is larger than the sum of its proper divisors (6552283).

143002661 is a wasteful number, since it uses less digits than its factorization.

143002661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13971.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 143002661 is about 11958.3720045832. The cubic root of 143002661 is about 522.9353967976.

It can be divided in two parts, 14300 and 2661, that added together give a palindrome (16961).

The spelling of 143002661 in words is "one hundred forty-three million, two thousand, six hundred sixty-one".