42111252 has 60 divisors (see below), whose sum is σ = 114893856. Its totient is φ = 13424400.

The previous prime is 42111247. The next prime is 42111253. The reversal of 42111252 is 25211124.

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 (42111253) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4627 + ... + 10277.

Almost surely, 2^42111252 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 42111252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57446928).

42111252 is an abundant number, since it is smaller than the sum of its proper divisors (72782604).

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

42111252 is a wasteful number, since it uses less digits than its factorization.

42111252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5690 (or 5679 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 42111252 is about 6489.3183000990. The cubic root of 42111252 is about 347.9093104942.

Adding to 42111252 its reverse (25211124), we get a palindrome (67322376).

The spelling of 42111252 in words is "forty-two million, one hundred eleven thousand, two hundred fifty-two".