42357278 has 16 divisors (see below), whose sum is σ = 64365840. Its totient is φ = 20904000.

The previous prime is 42357277. The next prime is 42357311. The reversal of 42357278 is 87275324.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42357277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70178 + ... + 70778.

It is an arithmetic number, because the mean of its divisors is an integer number (4022865).

Almost surely, 2^42357278 is an apocalyptic number.

42357278 is a deficient number, since it is larger than the sum of its proper divisors (22008562).

42357278 is a wasteful number, since it uses less digits than its factorization.

42357278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003.

The product of its digits is 94080, while the sum is 38.

The square root of 42357278 is about 6508.2469221750. The cubic root of 42357278 is about 348.5855239466.

The spelling of 42357278 in words is "forty-two million, three hundred fifty-seven thousand, two hundred seventy-eight".