42221802 has 32 divisors (see below), whose sum is σ = 96706944. Its totient is φ = 12038400.

The previous prime is 42221801. The next prime is 42221831. The reversal of 42221802 is 20812224.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (42221801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31302 + ... + 32622.

It is an arithmetic number, because the mean of its divisors is an integer number (3022092).

Almost surely, 2^42221802 is an apocalyptic number.

42221802 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

42221802 is an abundant number, since it is smaller than the sum of its proper divisors (54485142).

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

42221802 is a wasteful number, since it uses less digits than its factorization.

42221802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 42221802 is about 6497.8305610411. The cubic root of 42221802 is about 348.2134870529.

The spelling of 42221802 in words is "forty-two million, two hundred twenty-one thousand, eight hundred two".