42118452 has 36 divisors (see below), whose sum is σ = 112730436. Its totient is φ = 13213440.

The previous prime is 42118409. The next prime is 42118463. The reversal of 42118452 is 25481124.

It can be written as a sum of positive squares in 2 ways, for example, as 11249316 + 30869136 = 3354^2 + 5556^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33799 + ... + 35022.

It is an arithmetic number, because the mean of its divisors is an integer number (3131401).

Almost surely, 2^42118452 is an apocalyptic number.

It is an amenable number.

42118452 is an abundant number, since it is smaller than the sum of its proper divisors (70611984).

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

42118452 is a wasteful number, since it uses less digits than its factorization.

42118452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68848 (or 68843 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 42118452 is about 6489.8730341972. The cubic root of 42118452 is about 347.9291373748.

Adding to 42118452 its reverse (25481124), we get a palindrome (67599576).

The spelling of 42118452 in words is "forty-two million, one hundred eighteen thousand, four hundred fifty-two".