42220000 has 60 divisors (see below), whose sum is σ = 103916736. Its totient is φ = 16880000.

The previous prime is 42219979. The next prime is 42220081. The reversal of 42220000 is 2224.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 18945 + ... + 21055.

Almost surely, 2^42220000 is an apocalyptic number.

42220000 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 42220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51958368).

42220000 is an abundant number, since it is smaller than the sum of its proper divisors (61696736).

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

42220000 is an equidigital number, since it uses as much as digits as its factorization.

42220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141 (or 2118 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 42220000 is about 6497.6918978973. The cubic root of 42220000 is about 348.2085331381.

Adding to 42220000 its reverse (2224), we get a palindrome (42222224).

The spelling of 42220000 in words is "forty-two million, two hundred twenty thousand".