42273440 has 48 divisors (see below), whose sum is σ = 108954720. Its totient is φ = 15371520.

The previous prime is 42273437. The next prime is 42273479. The reversal of 42273440 is 4437224.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10250 + ... + 13769.

It is an arithmetic number, because the mean of its divisors is an integer number (2269890).

Almost surely, 2^42273440 is an apocalyptic number.

42273440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42273440 is an abundant number, since it is smaller than the sum of its proper divisors (66681280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42273440 is a wasteful number, since it uses less digits than its factorization.

42273440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24045 (or 24037 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 42273440 is about 6501.8028269089. The cubic root of 42273440 is about 348.3553862755.

It can be divided in two parts, 4227 and 3440, that added together give a palindrome (7667).

The spelling of 42273440 in words is "forty-two million, two hundred seventy-three thousand, four hundred forty".