40042134 has 32 divisors (see below), whose sum is σ = 97073280. Its totient is φ = 12133800.

The previous prime is 40042133. The next prime is 40042141. The reversal of 40042134 is 43124004.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40042133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33112 + ... + 34299.

It is an arithmetic number, because the mean of its divisors is an integer number (3033540).

Almost surely, 2^40042134 is an apocalyptic number.

40042134 is an abundant number, since it is smaller than the sum of its proper divisors (57031146).

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

40042134 is a wasteful number, since it uses less digits than its factorization.

40042134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67433 (or 67427 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 40042134 is about 6327.8854287985. The cubic root of 40042134 is about 342.1152274087.

Adding to 40042134 its reverse (43124004), we get a palindrome (83166138).

The spelling of 40042134 in words is "forty million, forty-two thousand, one hundred thirty-four".