42871040 has 36 divisors (see below), whose sum is σ = 102692604. Its totient is φ = 17147904.

The previous prime is 42871027. The next prime is 42871063. The reversal of 42871040 is 4017824.

It can be written as a sum of positive squares in 2 ways, for example, as 33918976 + 8952064 = 5824^2 + 2992^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15467 + ... + 18026.

Almost surely, 2^42871040 is an apocalyptic number.

42871040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42871040 is an abundant number, since it is smaller than the sum of its proper divisors (59821564).

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

42871040 is an equidigital number, since it uses as much as digits as its factorization.

42871040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33514 (or 33500 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 42871040 is about 6547.5980328667. The cubic root of 42871040 is about 349.9892241580.

Adding to 42871040 its reverse (4017824), we get a palindrome (46888864).

The spelling of 42871040 in words is "forty-two million, eight hundred seventy-one thousand, forty".