42134400 has 576 divisors, whose sum is σ = 197308800. Its totient is φ = 8294400.

The previous prime is 42134399. The next prime is 42134401. The reversal of 42134400 is 443124.

It is an interprime number because it is at equal distance from previous prime (42134399) and next prime (42134401).

It is a tau number, because it is divible by the number of its divisors (576).

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 (42134401) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2217591 + ... + 2217609.

It is an arithmetic number, because the mean of its divisors is an integer number (342550).

Almost surely, 2^42134400 is an apocalyptic number.

42134400 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 42134400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98654400).

42134400 is an abundant number, since it is smaller than the sum of its proper divisors (155174400).

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

42134400 is a wasteful number, since it uses less digits than its factorization.

42134400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67 (or 47 counting only the distinct ones).

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

The square root of 42134400 is about 6491.1016014233. The cubic root of 42134400 is about 347.9730458711.

Adding to 42134400 its reverse (443124), we get a palindrome (42577524).

The spelling of 42134400 in words is "forty-two million, one hundred thirty-four thousand, four hundred".