42273280 has 120 divisors (see below), whose sum is σ = 118254708. Its totient is φ = 14450688.

The previous prime is 42273269. The next prime is 42273293. The reversal of 42273280 is 8237224.

It can be written as a sum of positive squares in 2 ways, for example, as 40755456 + 1517824 = 6384^2 + 1232^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125272 + ... + 125608.

Almost surely, 2^42273280 is an apocalyptic number.

42273280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42273280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59127354).

42273280 is an abundant number, since it is smaller than the sum of its proper divisors (75981428).

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

42273280 is an equidigital number, since it uses as much as digits as its factorization.

42273280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 351 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 42273280 is about 6501.7905226176. The cubic root of 42273280 is about 348.3549467803.

The spelling of 42273280 in words is "forty-two million, two hundred seventy-three thousand, two hundred eighty".