42173384 has 16 divisors (see below), whose sum is σ = 86263920. Its totient is φ = 19169680.

The previous prime is 42173381. The next prime is 42173389. The reversal of 42173384 is 48337124.

It is a super-2 number, since 2×42173384² = 3557188636022912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42173384.

It is not an unprimeable number, because it can be changed into a prime (42173381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239534 + ... + 239709.

It is an arithmetic number, because the mean of its divisors is an integer number (5391495).

Almost surely, 2^42173384 is an apocalyptic number.

42173384 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42173384 is an abundant number, since it is smaller than the sum of its proper divisors (44090536).

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

42173384 is a wasteful number, since it uses less digits than its factorization.

42173384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479260 (or 479256 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 42173384 is about 6494.1037872827. The cubic root of 42173384 is about 348.0803311271.

The spelling of 42173384 in words is "forty-two million, one hundred seventy-three thousand, three hundred eighty-four".