42014640 has 40 divisors (see below), whose sum is σ = 130246128. Its totient is φ = 11203840.

The previous prime is 42014611. The next prime is 42014689. The reversal of 42014640 is 4641024.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87291 + ... + 87770.

Almost surely, 2^42014640 is an apocalyptic number.

42014640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42014640 is an abundant number, since it is smaller than the sum of its proper divisors (88231488).

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

42014640 is a wasteful number, since it uses less digits than its factorization.

42014640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175077 (or 175071 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 42014640 is about 6481.8701005188. The cubic root of 42014640 is about 347.6430479160.

Adding to 42014640 its reverse (4641024), we get a palindrome (46655664).

The spelling of 42014640 in words is "forty-two million, fourteen thousand, six hundred forty".