42130043 has 4 divisors (see below), whose sum is σ = 43961808. Its totient is φ = 40298280.

The previous prime is 42130021. The next prime is 42130061. The reversal of 42130043 is 34003124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42130043 - 2¹² = 42125947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42130343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915848 + ... + 915893.

It is an arithmetic number, because the mean of its divisors is an integer number (10990452).

Almost surely, 2^42130043 is an apocalyptic number.

42130043 is a deficient number, since it is larger than the sum of its proper divisors (1831765).

42130043 is a wasteful number, since it uses less digits than its factorization.

42130043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831764.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 42130043 is about 6490.7659794511. The cubic root of 42130043 is about 347.9610511524.

Adding to 42130043 its reverse (34003124), we get a palindrome (76133167).

The spelling of 42130043 in words is "forty-two million, one hundred thirty thousand, forty-three".