42143280 has 80 divisors (see below), whose sum is σ = 132179040. Its totient is φ = 11106304.

The previous prime is 42143279. The next prime is 42143281. The reversal of 42143280 is 8234124.

It is an interprime number because it is at equal distance from previous prime (42143279) and next prime (42143281).

It is a tau number, because it is divible by the number of its divisors (80).

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 42143280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42143281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20374 + ... + 22346.

It is an arithmetic number, because the mean of its divisors is an integer number (1652238).

Almost surely, 2^42143280 is an apocalyptic number.

42143280 is a gapful number since it is divisible by the number (40) 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 42143280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66089520).

42143280 is an abundant number, since it is smaller than the sum of its proper divisors (90035760).

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

42143280 is a wasteful number, since it uses less digits than its factorization.

42143280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078 (or 2072 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 42143280 is about 6491.7855787141. The cubic root of 42143280 is about 347.9974897428.

The spelling of 42143280 in words is "forty-two million, one hundred forty-three thousand, two hundred eighty".