42436240 has 120 divisors (see below), whose sum is σ = 124509888. Its totient is φ = 13067520.

The previous prime is 42436223. The next prime is 42436249. The reversal of 42436240 is 4263424.

It is not an unprimeable number, because it can be changed into a prime (42436249) 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, 511239 + ... + 511321.

Almost surely, 2^42436240 is an apocalyptic number.

42436240 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 42436240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62254944).

42436240 is an abundant number, since it is smaller than the sum of its proper divisors (82073648).

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

42436240 is a wasteful number, since it uses less digits than its factorization.

42436240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 42436240 is about 6514.3104009557. The cubic root of 42436240 is about 348.8019993292.

Adding to 42436240 its reverse (4263424), we get a palindrome (46699664).

The spelling of 42436240 in words is "forty-two million, four hundred thirty-six thousand, two hundred forty".