42905052 has 72 divisors (see below), whose sum is σ = 115607856. Its totient is φ = 13903488.

The previous prime is 42905033. The next prime is 42905063. The reversal of 42905052 is 25050924.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35368 + ... + 36560.

Almost surely, 2^42905052 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 42905052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57803928).

42905052 is an abundant number, since it is smaller than the sum of its proper divisors (72702804).

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

42905052 is a wasteful number, since it uses less digits than its factorization.

42905052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 42905052 is about 6550.1948062634. The cubic root of 42905052 is about 350.0817550513.

Adding to 42905052 its reverse (25050924), we get a palindrome (67955976).

The spelling of 42905052 in words is "forty-two million, nine hundred five thousand, fifty-two".