42812938 has 16 divisors (see below), whose sum is σ = 75184704. Its totient is φ = 17900640.

The previous prime is 42812921. The next prime is 42812941. The reversal of 42812938 is 83921824.

It is a junction number, because it is equal to n+sod(n) for n = 42812897 and 42812906.

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, 36720 + ... + 37867.

It is an arithmetic number, because the mean of its divisors is an integer number (4699044).

Almost surely, 2^42812938 is an apocalyptic number.

42812938 is a deficient number, since it is larger than the sum of its proper divisors (32371766).

42812938 is a wasteful number, since it uses less digits than its factorization.

42812938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74637.

The product of its digits is 27648, while the sum is 37.

The square root of 42812938 is about 6543.1596343051. The cubic root of 42812938 is about 349.8310422606.

It can be divided in two parts, 428 and 12938, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 42812938 in words is "forty-two million, eight hundred twelve thousand, nine hundred thirty-eight".