42045510 has 48 divisors (see below), whose sum is σ = 109281744. Its totient is φ = 10348416.

The previous prime is 42045491. The next prime is 42045511. The reversal of 42045510 is 1554024.

It is a super-2 number, since 2×42045510² = 3535649822320200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42045511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 924 + ... + 9216.

It is an arithmetic number, because the mean of its divisors is an integer number (2276703).

Almost surely, 2^42045510 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42045510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54640872).

42045510 is an abundant number, since it is smaller than the sum of its proper divisors (67236234).

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

42045510 is a wasteful number, since it uses less digits than its factorization.

42045510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8329 (or 8316 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 42045510 is about 6484.2509204996. The cubic root of 42045510 is about 347.7281699401.

Adding to 42045510 its reverse (1554024), we get a palindrome (43599534).

The spelling of 42045510 in words is "forty-two million, forty-five thousand, five hundred ten".