42234012 has 72 divisors (see below), whose sum is σ = 110510400. Its totient is φ = 13592448.

The previous prime is 42234011. The next prime is 42234037. The reversal of 42234012 is 21043224.

It is a super-2 number, since 2×42234012² = 3567423539232288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42234011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184314 + ... + 184542.

Almost surely, 2^42234012 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 42234012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55255200).

42234012 is an abundant number, since it is smaller than the sum of its proper divisors (68276388).

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

42234012 is a wasteful number, since it uses less digits than its factorization.

42234012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 42234012 is about 6498.7700374763. The cubic root of 42234012 is about 348.2470500993.

Adding to 42234012 its reverse (21043224), we get a palindrome (63277236).

The spelling of 42234012 in words is "forty-two million, two hundred thirty-four thousand, twelve".