42258660 has 72 divisors (see below), whose sum is σ = 124943616. Its totient is φ = 10670400.

The previous prime is 42258647. The next prime is 42258661. The reversal of 42258660 is 6685224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42258661) 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, 20685 + ... + 22635.

It is an arithmetic number, because the mean of its divisors is an integer number (1735328).

Almost surely, 2^42258660 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 42258660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62471808).

42258660 is an abundant number, since it is smaller than the sum of its proper divisors (82684956).

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

42258660 is a wasteful number, since it uses less digits than its factorization.

42258660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001 (or 1980 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 42258660 is about 6500.6661197142. Note that the first 3 decimals coincide. The cubic root of 42258660 is about 348.3147832178.

The spelling of 42258660 in words is "forty-two million, two hundred fifty-eight thousand, six hundred sixty".