42455880 has 128 divisors (see below), whose sum is σ = 149040000. Its totient is φ = 10720512.

The previous prime is 42455873. The next prime is 42455887. The reversal of 42455880 is 8855424.

42455880 is a `hidden beast` number, since 4 + 24 + 558 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (42455873) and next prime (42455887).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (42455887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19486 + ... + 21554.

It is an arithmetic number, because the mean of its divisors is an integer number (1164375).

Almost surely, 2^42455880 is an apocalyptic number.

42455880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42455880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74520000).

42455880 is an abundant number, since it is smaller than the sum of its proper divisors (106584120).

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

42455880 is a wasteful number, since it uses less digits than its factorization.

42455880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108 (or 2098 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 42455880 is about 6515.8176770072. The cubic root of 42455880 is about 348.8558009440.

The spelling of 42455880 in words is "forty-two million, four hundred fifty-five thousand, eight hundred eighty".