42501142 has 4 divisors (see below), whose sum is σ = 63751716. Its totient is φ = 21250570.

The previous prime is 42501091. The next prime is 42501161. The reversal of 42501142 is 24110524.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10625284 + ... + 10625287.

It is an arithmetic number, because the mean of its divisors is an integer number (15937929).

Almost surely, 2^42501142 is an apocalyptic number.

42501142 is a deficient number, since it is larger than the sum of its proper divisors (21250574).

42501142 is a wasteful number, since it uses less digits than its factorization.

42501142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21250573.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 42501142 is about 6519.2899920160. The cubic root of 42501142 is about 348.9797280530.

Adding to 42501142 its reverse (24110524), we get a palindrome (66611666).

The spelling of 42501142 in words is "forty-two million, five hundred one thousand, one hundred forty-two".