80143140 has 288 divisors, whose sum is σ = 300303360. Its totient is φ = 15586560.

The previous prime is 80143139. The next prime is 80143163. The reversal of 80143140 is 4134108.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 965539 + ... + 965621.

It is an arithmetic number, because the mean of its divisors is an integer number (1042720).

Almost surely, 2^80143140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80143140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150151680).

80143140 is an abundant number, since it is smaller than the sum of its proper divisors (220160220).

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

80143140 is a wasteful number, since it uses less digits than its factorization.

80143140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 80143140 is about 8952.2701031638. The cubic root of 80143140 is about 431.1437730378.

Adding to 80143140 its reverse (4134108), we get a palindrome (84277248).

The spelling of 80143140 in words is "eighty million, one hundred forty-three thousand, one hundred forty".