42773238 has 32 divisors (see below), whose sum is σ = 99187200. Its totient is φ = 13637448.

The previous prime is 42773233. The next prime is 42773251. The reversal of 42773238 is 83237724.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42773233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15978 + ... + 18461.

It is an arithmetic number, because the mean of its divisors is an integer number (3099600).

Almost surely, 2^42773238 is an apocalyptic number.

42773238 is an abundant number, since it is smaller than the sum of its proper divisors (56413962).

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

42773238 is a wasteful number, since it uses less digits than its factorization.

42773238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34473 (or 34467 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 42773238 is about 6540.1252281589. The cubic root of 42773238 is about 349.7228772365.

The spelling of 42773238 in words is "forty-two million, seven hundred seventy-three thousand, two hundred thirty-eight".