42024240 has 60 divisors (see below), whose sum is σ = 141133824. Its totient is φ = 11206272.

The previous prime is 42024239. The next prime is 42024247. The reversal of 42024240 is 4242024.

42024240 is a `hidden beast` number, since 420 + 2 + 4 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

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

It is not an unprimeable number, because it can be changed into a prime (42024247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28464 + ... + 29903.

Almost surely, 2^42024240 is an apocalyptic number.

42024240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42024240 is an abundant number, since it is smaller than the sum of its proper divisors (99109584).

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

42024240 is a wasteful number, since it uses less digits than its factorization.

42024240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58386 (or 58377 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 42024240 is about 6482.6105852504. The cubic root of 42024240 is about 347.6695237595.

Adding to 42024240 its reverse (4242024), we get a palindrome (46266264).

The spelling of 42024240 in words is "forty-two million, twenty-four thousand, two hundred forty".