42115212 has 36 divisors (see below), whose sum is σ = 107963856. Its totient is φ = 13839840.

The previous prime is 42115207. The next prime is 42115217. The reversal of 42115212 is 21251124.

It is an interprime number because it is at equal distance from previous prime (42115207) and next prime (42115217).

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (42115217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5683 + ... + 10794.

It is an arithmetic number, because the mean of its divisors is an integer number (2998996).

Almost surely, 2^42115212 is an apocalyptic number.

It is an amenable number.

42115212 is an abundant number, since it is smaller than the sum of its proper divisors (65848644).

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

42115212 is a wasteful number, since it uses less digits than its factorization.

42115212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16558 (or 16553 counting only the distinct ones).

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

The square root of 42115212 is about 6489.6234097211. The cubic root of 42115212 is about 347.9202155582.

Adding to 42115212 its reverse (21251124), we get a palindrome (63366336).

The spelling of 42115212 in words is "forty-two million, one hundred fifteen thousand, two hundred twelve".