42381430 has 32 divisors (see below), whose sum is σ = 93893184. Its totient is φ = 13412736.

The previous prime is 42381421. The next prime is 42381439. The reversal of 42381430 is 3418324.

It is an interprime number because it is at equal distance from previous prime (42381421) and next prime (42381439).

It is a junction number, because it is equal to n+sod(n) for n = 42381395 and 42381404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42381439) 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, 22377 + ... + 24196.

It is an arithmetic number, because the mean of its divisors is an integer number (2934162).

Almost surely, 2^42381430 is an apocalyptic number.

42381430 is an abundant number, since it is smaller than the sum of its proper divisors (51511754).

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

42381430 is a wasteful number, since it uses less digits than its factorization.

42381430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46600.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 42381430 is about 6510.1021497362. The cubic root of 42381430 is about 348.6517655176.

Adding to 42381430 its reverse (3418324), we get a palindrome (45799754).

The spelling of 42381430 in words is "forty-two million, three hundred eighty-one thousand, four hundred thirty".