143915 has 8 divisors (see below), whose sum is σ = 174960. Its totient is φ = 113632.

The previous prime is 143909. The next prime is 143947. The reversal of 143915 is 519341.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143915 is a prime.

It is a d-powerful number, because it can be written as 1 + 4⁸ + 9 + 3⁵ + 1 + 5⁷ .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143915.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401 + ... + 669.

It is an arithmetic number, because the mean of its divisors is an integer number (21870).

2¹⁴³⁹¹⁵ is an apocalyptic number.

143915 is a deficient number, since it is larger than the sum of its proper divisors (31045).

143915 is a wasteful number, since it uses less digits than its factorization.

143915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381.

The product of its digits is 540, while the sum is 23.

The square root of 143915 is about 379.3613053541. The cubic root of 143915 is about 52.4045127516.

The spelling of 143915 in words is "one hundred forty-three thousand, nine hundred fifteen".