42836904 has 128 divisors (see below), whose sum is σ = 131760000. Its totient is φ = 12893760.

The previous prime is 42836897. The next prime is 42836909. The reversal of 42836904 is 40963824.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (42836909) 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, 287422 + ... + 287570.

It is an arithmetic number, because the mean of its divisors is an integer number (1029375).

Almost surely, 2^42836904 is an apocalyptic number.

42836904 is a gapful number since it is divisible by the number (44) 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 42836904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65880000).

42836904 is an abundant number, since it is smaller than the sum of its proper divisors (88923096).

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

42836904 is a wasteful number, since it uses less digits than its factorization.

42836904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 42836904 is about 6544.9907562960. The cubic root of 42836904 is about 349.8963066971.

Subtracting from 42836904 its reverse (40963824), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 42836904 in words is "forty-two million, eight hundred thirty-six thousand, nine hundred four".