42471138 has 16 divisors (see below), whose sum is σ = 87871680. Its totient is φ = 13668816.

The previous prime is 42471131. The next prime is 42471139. The reversal of 42471138 is 83117424.

It is not an unprimeable number, because it can be changed into a prime (42471131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121870 + ... + 122217.

It is an arithmetic number, because the mean of its divisors is an integer number (5491980).

Almost surely, 2^42471138 is an apocalyptic number.

42471138 is an abundant number, since it is smaller than the sum of its proper divisors (45400542).

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

42471138 is a wasteful number, since it uses less digits than its factorization.

42471138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244121.

The product of its digits is 5376, while the sum is 30.

The square root of 42471138 is about 6516.9884149045. The cubic root of 42471138 is about 348.8975871017.

The spelling of 42471138 in words is "forty-two million, four hundred seventy-one thousand, one hundred thirty-eight".