42430320 has 120 divisors (see below), whose sum is σ = 147169152. Its totient is φ = 10944000.

The previous prime is 42430307. The next prime is 42430327. The reversal of 42430320 is 2303424.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 42430293 and 42430302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42430327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21370 + ... + 23270.

Almost surely, 2^42430320 is an apocalyptic number.

42430320 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 42430320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73584576).

42430320 is an abundant number, since it is smaller than the sum of its proper divisors (104738832).

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

42430320 is a wasteful number, since it uses less digits than its factorization.

42430320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951 (or 1942 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 42430320 is about 6513.8560008646. The cubic root of 42430320 is about 348.7857788860.

Adding to 42430320 its reverse (2303424), we get a palindrome (44733744).

The spelling of 42430320 in words is "forty-two million, four hundred thirty thousand, three hundred twenty".