42342240 has 96 divisors (see below), whose sum is σ = 141251040. Its totient is φ = 10625024.

The previous prime is 42342239. The next prime is 42342247. The reversal of 42342240 is 4224324.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42342247) 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, 5566 + ... + 10754.

It is an arithmetic number, because the mean of its divisors is an integer number (1471365).

Almost surely, 2^42342240 is an apocalyptic number.

42342240 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 42342240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70625520).

42342240 is an abundant number, since it is smaller than the sum of its proper divisors (98908800).

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

42342240 is a wasteful number, since it uses less digits than its factorization.

42342240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5224 (or 5216 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 42342240 is about 6507.0915161845. The cubic root of 42342240 is about 348.5442665773.

Adding to 42342240 its reverse (4224324), we get a palindrome (46566564).

The spelling of 42342240 in words is "forty-two million, three hundred forty-two thousand, two hundred forty".