42012838 has 32 divisors (see below), whose sum is σ = 77126400. Its totient is φ = 16762464.

The previous prime is 42012821. The next prime is 42012847. The reversal of 42012838 is 83821024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14356 + ... + 17032.

It is an arithmetic number, because the mean of its divisors is an integer number (2410200).

Almost surely, 2^42012838 is an apocalyptic number.

42012838 is a deficient number, since it is larger than the sum of its proper divisors (35113562).

42012838 is a wasteful number, since it uses less digits than its factorization.

42012838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 42012838 is about 6481.7310959342. The cubic root of 42012838 is about 347.6380777299.

The spelling of 42012838 in words is "forty-two million, twelve thousand, eight hundred thirty-eight".