42220872 has 64 divisors (see below), whose sum is σ = 119304000. Its totient is φ = 13830912.

The previous prime is 42220837. The next prime is 42220903. The reversal of 42220872 is 27802224.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11088 + ... + 14400.

It is an arithmetic number, because the mean of its divisors is an integer number (1864125).

Almost surely, 2^42220872 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 42220872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59652000).

42220872 is an abundant number, since it is smaller than the sum of its proper divisors (77083128).

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

42220872 is a wasteful number, since it uses less digits than its factorization.

42220872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387 (or 3377 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 42220872 is about 6497.7589983009. The cubic root of 42220872 is about 348.2109303886.

The spelling of 42220872 in words is "forty-two million, two hundred twenty thousand, eight hundred seventy-two".