42252140 has 96 divisors (see below), whose sum is σ = 110242944. Its totient is φ = 13271040.

The previous prime is 42252137. The next prime is 42252151. The reversal of 42252140 is 4125224.

It is a happy number.

42252140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97364 + ... + 97796.

It is an arithmetic number, because the mean of its divisors is an integer number (1148364).

Almost surely, 2^42252140 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 42252140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55121472).

42252140 is an abundant number, since it is smaller than the sum of its proper divisors (67990804).

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

42252140 is a wasteful number, since it uses less digits than its factorization.

42252140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 42252140 is about 6500.1646133002. The cubic root of 42252140 is about 348.2968687107.

Adding to 42252140 its reverse (4125224), we get a palindrome (46377364).

The spelling of 42252140 in words is "forty-two million, two hundred fifty-two thousand, one hundred forty".