143279955 has 128 divisors (see below), whose sum is σ = 319334400. Its totient is φ = 59346432.

The previous prime is 143279921. The next prime is 143279957. The reversal of 143279955 is 559972341.

It is a happy number.

It is not a de Polignac number, because 143279955 - 2⁸ = 143279699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 143279955.

It is not an unprimeable number, because it can be changed into a prime (143279957) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1314441 + ... + 1314549.

It is an arithmetic number, because the mean of its divisors is an integer number (2494800).

Almost surely, 2^143279955 is an apocalyptic number.

143279955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

143279955 is an abundant number, since it is smaller than the sum of its proper divisors (176054445).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143279955 is a wasteful number, since it uses less digits than its factorization.

143279955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 244 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 143279955 is about 11969.9605262507. The cubic root of 143279955 is about 523.2731835702.

The spelling of 143279955 in words is "one hundred forty-three million, two hundred seventy-nine thousand, nine hundred fifty-five".