42252028 has 36 divisors (see below), whose sum is σ = 91514640. Its totient is φ = 16713216.

The previous prime is 42252019. The next prime is 42252047. The reversal of 42252028 is 82025224.

It is a super-2 number, since 2×42252028² = 3570467740225568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42251993 and 42252011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 268 + ... + 9196.

Almost surely, 2^42252028 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 42252028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45757320).

42252028 is an abundant number, since it is smaller than the sum of its proper divisors (49262612).

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

42252028 is a wasteful number, since it uses less digits than its factorization.

42252028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8966 (or 8951 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 42252028 is about 6500.1559981280. The cubic root of 42252028 is about 348.2965609608.

The spelling of 42252028 in words is "forty-two million, two hundred fifty-two thousand, twenty-eight".