42810222 has 96 divisors (see below), whose sum is σ = 112154112. Its totient is φ = 10777536.

The previous prime is 42810181. The next prime is 42810263. The reversal of 42810222 is 22201824.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42810181) and next prime (42810263).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87663 + ... + 88149.

It is an arithmetic number, because the mean of its divisors is an integer number (1168272).

Almost surely, 2^42810222 is an apocalyptic number.

42810222 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 42810222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56077056).

42810222 is an abundant number, since it is smaller than the sum of its proper divisors (69343890).

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

42810222 is a wasteful number, since it uses less digits than its factorization.

42810222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 535 counting only the distinct ones).

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

The square root of 42810222 is about 6542.9520860236. The cubic root of 42810222 is about 349.8236444875.

The spelling of 42810222 in words is "forty-two million, eight hundred ten thousand, two hundred twenty-two".