42273530 has 16 divisors (see below), whose sum is σ = 81945864. Its totient is φ = 15608640.

The previous prime is 42273527. The next prime is 42273541. The reversal of 42273530 is 3537224.

It can be written as a sum of positive squares in 4 ways, for example, as 20529961 + 21743569 = 4531^2 + 4663^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42273530.

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, 162461 + ... + 162720.

Almost surely, 2^42273530 is an apocalyptic number.

42273530 is a deficient number, since it is larger than the sum of its proper divisors (39672334).

42273530 is a wasteful number, since it uses less digits than its factorization.

42273530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325201.

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 42273530 is about 6501.8097480625. The cubic root of 42273530 is about 348.3556334911.

The spelling of 42273530 in words is "forty-two million, two hundred seventy-three thousand, five hundred thirty".