42289208 has 48 divisors (see below), whose sum is σ = 88718400. Its totient is φ = 18869760.

The previous prime is 42289189. The next prime is 42289213. The reversal of 42289208 is 80298224.

It is a super-2 number, since 2×42289208² = 3576754226534528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41408 + ... + 42416.

It is an arithmetic number, because the mean of its divisors is an integer number (1848300).

Almost surely, 2^42289208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42289208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44359200).

42289208 is an abundant number, since it is smaller than the sum of its proper divisors (46429192).

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

42289208 is a wasteful number, since it uses less digits than its factorization.

42289208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072 (or 1055 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 42289208 is about 6503.0153006125. The cubic root of 42289208 is about 348.3986930968.

The spelling of 42289208 in words is "forty-two million, two hundred eighty-nine thousand, two hundred eight".