42030222 has 64 divisors (see below), whose sum is σ = 99247680. Its totient is φ = 11741184.

The previous prime is 42030217. The next prime is 42030227. The reversal of 42030222 is 22203024.

42030222 = 34² + 35² + ... + 501².

It is an interprime number because it is at equal distance from previous prime (42030217) and next prime (42030227).

It is a super-2 number, since 2×42030222² = 3533079122738568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42030227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37908 + ... + 39000.

It is an arithmetic number, because the mean of its divisors is an integer number (1550745).

Almost surely, 2^42030222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42030222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49623840).

42030222 is an abundant number, since it is smaller than the sum of its proper divisors (57217458).

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

42030222 is a wasteful number, since it uses less digits than its factorization.

42030222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 42030222 is about 6483.0719570278. The cubic root of 42030222 is about 347.6860194805.

Adding to 42030222 its reverse (22203024), we get a palindrome (64233246).

It can be divided in two parts, 4203022 and 2, that added together give a palindrome (4203024).

The spelling of 42030222 in words is "forty-two million, thirty thousand, two hundred twenty-two".