42052143 has 16 divisors (see below), whose sum is σ = 65388800. Its totient is φ = 24029208.

The previous prime is 42052079. The next prime is 42052147. The reversal of 42052143 is 34125024.

It is not a de Polignac number, because 42052143 - 2⁶ = 42052079 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42052147) 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, 19405 + ... + 21462.

It is an arithmetic number, because the mean of its divisors is an integer number (4086800).

Almost surely, 2^42052143 is an apocalyptic number.

42052143 is a deficient number, since it is larger than the sum of its proper divisors (23336657).

42052143 is an equidigital number, since it uses as much as digits as its factorization.

42052143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40891 (or 40877 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 42052143 is about 6484.7623703571. The cubic root of 42052143 is about 347.7464545692.

Adding to 42052143 its reverse (34125024), we get a palindrome (76177167).

It can be divided in two parts, 42052 and 143, that added together give a triangular number (42195 = T₂₉₀).

The spelling of 42052143 in words is "forty-two million, fifty-two thousand, one hundred forty-three".