42112378 has 16 divisors (see below), whose sum is σ = 78755904. Its totient is φ = 16407360.

The previous prime is 42112363. The next prime is 42112403. The reversal of 42112378 is 87321124.

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, 136575 + ... + 136882.

It is an arithmetic number, because the mean of its divisors is an integer number (4922244).

Almost surely, 2^42112378 is an apocalyptic number.

42112378 is a deficient number, since it is larger than the sum of its proper divisors (36643526).

42112378 is a wasteful number, since it uses less digits than its factorization.

42112378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273477.

The product of its digits is 2688, while the sum is 28.

The square root of 42112378 is about 6489.4050574764. The cubic root of 42112378 is about 347.9124113471.

It can be divided in two parts, 421123 and 78, that added together give a square (421201 = 649²).

The spelling of 42112378 in words is "forty-two million, one hundred twelve thousand, three hundred seventy-eight".