42273818 has 8 divisors (see below), whose sum is σ = 63467712. Its totient is φ = 21117916.

The previous prime is 42273811. The next prime is 42273823. The reversal of 42273818 is 81837224.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42273811) 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, 6530 + ... + 11277.

It is an arithmetic number, because the mean of its divisors is an integer number (7933464).

Almost surely, 2^42273818 is an apocalyptic number.

42273818 is a deficient number, since it is larger than the sum of its proper divisors (21193894).

42273818 is a wasteful number, since it uses less digits than its factorization.

42273818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18996.

The product of its digits is 21504, while the sum is 35.

The square root of 42273818 is about 6501.8318957045. The cubic root of 42273818 is about 348.3564245787.

The spelling of 42273818 in words is "forty-two million, two hundred seventy-three thousand, eight hundred eighteen".