42120288 has 144 divisors (see below), whose sum is σ = 145061280. Its totient is φ = 11317248.

The previous prime is 42120251. The next prime is 42120301. The reversal of 42120288 is 88202124.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×42120288² = 3548237322405888, 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 23 ways as a sum of consecutive naturals, for example, 33658 + ... + 34886.

It is an arithmetic number, because the mean of its divisors is an integer number (1007370).

Almost surely, 2^42120288 is an apocalyptic number.

42120288 is a gapful number since it is divisible by the number (48) 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 42120288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72530640).

42120288 is an abundant number, since it is smaller than the sum of its proper divisors (102940992).

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

42120288 is a wasteful number, since it uses less digits than its factorization.

42120288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 42120288 is about 6490.0144838051. The cubic root of 42120288 is about 347.9341928677.

The spelling of 42120288 in words is "forty-two million, one hundred twenty thousand, two hundred eighty-eight".