143872840 has 64 divisors (see below), whose sum is σ = 333590400. Its totient is φ = 55813632.

The previous prime is 143872837. The next prime is 143872847. The reversal of 143872840 is 48278341.

It is a self number, because there is not a number n which added to its sum of digits gives 143872840.

It is not an unprimeable number, because it can be changed into a prime (143872847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400581 + ... + 400939.

It is an arithmetic number, because the mean of its divisors is an integer number (5212350).

Almost surely, 2^143872840 is an apocalyptic number.

143872840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143872840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166795200).

143872840 is an abundant number, since it is smaller than the sum of its proper divisors (189717560).

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

143872840 is a wasteful number, since it uses less digits than its factorization.

143872840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 143872840 is about 11994.7004964693. The cubic root of 143872840 is about 523.9939493892.

The spelling of 143872840 in words is "one hundred forty-three million, eight hundred seventy-two thousand, eight hundred forty".