143161440 has 96 divisors (see below), whose sum is σ = 455577696. Its totient is φ = 37785600.

The previous prime is 143161423. The next prime is 143161477. The reversal of 143161440 is 44161341.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 143161440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47004 + ... + 49956.

It is an arithmetic number, because the mean of its divisors is an integer number (4745601).

Almost surely, 2^143161440 is an apocalyptic number.

143161440 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 143161440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227788848).

143161440 is an abundant number, since it is smaller than the sum of its proper divisors (312416256).

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

143161440 is a wasteful number, since it uses less digits than its factorization.

143161440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3072 (or 3064 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 143161440 is about 11965.0089845349. The cubic root of 143161440 is about 523.1288674349.

Subtracting from 143161440 its reverse (44161341), we obtain a palindrome (99000099).

The spelling of 143161440 in words is "one hundred forty-three million, one hundred sixty-one thousand, four hundred forty".