42681450 has 72 divisors (see below), whose sum is σ = 123152832. Its totient is φ = 9754080.

The previous prime is 42681439. The next prime is 42681493. The reversal of 42681450 is 5418624.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4447 + ... + 10253.

It is an arithmetic number, because the mean of its divisors is an integer number (1710456).

Almost surely, 2^42681450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42681450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61576416).

42681450 is an abundant number, since it is smaller than the sum of its proper divisors (80471382).

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

42681450 is a wasteful number, since it uses less digits than its factorization.

42681450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5836 (or 5824 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 42681450 is about 6533.1041626473. The cubic root of 42681450 is about 349.4725388318.

The spelling of 42681450 in words is "forty-two million, six hundred eighty-one thousand, four hundred fifty".