42487040 has 72 divisors (see below), whose sum is σ = 107187360. Its totient is φ = 16091136.

The previous prime is 42487033. The next prime is 42487043. The reversal of 42487040 is 4078424.

It is a junction number, because it is equal to n+sod(n) for n = 42486994 and 42487012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42487043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23447 + ... + 25193.

Almost surely, 2^42487040 is an apocalyptic number.

42487040 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 42487040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53593680).

42487040 is an abundant number, since it is smaller than the sum of its proper divisors (64700320).

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

42487040 is a wasteful number, since it uses less digits than its factorization.

42487040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787 (or 1773 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 42487040 is about 6518.2083427887. The cubic root of 42487040 is about 348.9411262939.

The spelling of 42487040 in words is "forty-two million, four hundred eighty-seven thousand, forty".