42120143 has 8 divisors (see below), whose sum is σ = 45460128. Its totient is φ = 38794464.

The previous prime is 42120119. The next prime is 42120157. The reversal of 42120143 is 34102124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42120143 - 2⁸ = 42119887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42120943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3005 + ... + 9657.

It is an arithmetic number, because the mean of its divisors is an integer number (5682516).

Almost surely, 2^42120143 is an apocalyptic number.

42120143 is a deficient number, since it is larger than the sum of its proper divisors (3339985).

42120143 is a wasteful number, since it uses less digits than its factorization.

42120143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7153.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 42120143 is about 6490.0033127881. The cubic root of 42120143 is about 347.9337936103.

Adding to 42120143 its reverse (34102124), we get a palindrome (76222267).

The spelling of 42120143 in words is "forty-two million, one hundred twenty thousand, one hundred forty-three".