42134040 has 128 divisors (see below), whose sum is σ = 151300800. Its totient is φ = 10368000.

The previous prime is 42134021. The next prime is 42134047. The reversal of 42134040 is 4043124.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42134047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12540 + ... + 15540.

Almost surely, 2^42134040 is an apocalyptic number.

42134040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42134040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75650400).

42134040 is an abundant number, since it is smaller than the sum of its proper divisors (109166760).

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

42134040 is a wasteful number, since it uses less digits than its factorization.

42134040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3034 (or 3024 counting only the distinct ones).

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

The square root of 42134040 is about 6491.0738710941. The cubic root of 42134040 is about 347.9720548309.

Adding to 42134040 its reverse (4043124), we get a palindrome (46177164).

The spelling of 42134040 in words is "forty-two million, one hundred thirty-four thousand, forty".