42439488 has 168 divisors, whose sum is σ = 141073632. Its totient is φ = 11160576.

The previous prime is 42439471. The next prime is 42439489. The reversal of 42439488 is 88493424.

It is a tau number, because it is divible by the number of its divisors (168).

It is a super-2 number, since 2×42439488² = 3602220283404288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42439489) 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, 122131 + ... + 122477.

It is an arithmetic number, because the mean of its divisors is an integer number (839724).

Almost surely, 2^42439488 is an apocalyptic number.

42439488 is a gapful number since it is divisible by the number (48) 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 42439488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70536816).

42439488 is an abundant number, since it is smaller than the sum of its proper divisors (98634144).

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

42439488 is a wasteful number, since it uses less digits than its factorization.

42439488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 372 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 42439488 is about 6514.5596934866. The cubic root of 42439488 is about 348.8108980126.

It can be divided in two parts, 4243 and 9488, that added together give a palindrome (13731).

The spelling of 42439488 in words is "forty-two million, four hundred thirty-nine thousand, four hundred eighty-eight".