42165254 has 4 divisors (see below), whose sum is σ = 63247884. Its totient is φ = 21082626.

The previous prime is 42165247. The next prime is 42165293. The reversal of 42165254 is 45256124.

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, 10541312 + ... + 10541315.

It is an arithmetic number, because the mean of its divisors is an integer number (15811971).

Almost surely, 2^42165254 is an apocalyptic number.

42165254 is a deficient number, since it is larger than the sum of its proper divisors (21082630).

42165254 is a wasteful number, since it uses less digits than its factorization.

42165254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21082629.

The product of its digits is 9600, while the sum is 29.

The square root of 42165254 is about 6493.4778046899. The cubic root of 42165254 is about 348.0579625565.

The spelling of 42165254 in words is "forty-two million, one hundred sixty-five thousand, two hundred fifty-four".