42432720 has 80 divisors (see below), whose sum is σ = 143508672. Its totient is φ = 10286080.

The previous prime is 42432703. The next prime is 42432721. The reversal of 42432720 is 2723424.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42432721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5397 + ... + 10676.

Almost surely, 2^42432720 is an apocalyptic number.

42432720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42432720 is an abundant number, since it is smaller than the sum of its proper divisors (101075952).

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

42432720 is a wasteful number, since it uses less digits than its factorization.

42432720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16100 (or 16094 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 42432720 is about 6514.0402209382. The cubic root of 42432720 is about 348.7923549232.

The spelling of 42432720 in words is "forty-two million, four hundred thirty-two thousand, seven hundred twenty".