42023240 has 32 divisors (see below), whose sum is σ = 108060480. Its totient is φ = 14407872.

The previous prime is 42023239. The next prime is 42023249. The reversal of 42023240 is 4232024.

It is not an unprimeable number, because it can be changed into a prime (42023249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74762 + ... + 75321.

It is an arithmetic number, because the mean of its divisors is an integer number (3376890).

Almost surely, 2^42023240 is an apocalyptic number.

42023240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42023240 is an abundant number, since it is smaller than the sum of its proper divisors (66037240).

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

42023240 is a wasteful number, since it uses less digits than its factorization.

42023240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150101 (or 150097 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 42023240 is about 6482.5334553707. The cubic root of 42023240 is about 347.6667660473. Note that the first 3 decimals are identical.

Adding to 42023240 its reverse (4232024), we get a palindrome (46255264).

The spelling of 42023240 in words is "forty-two million, twenty-three thousand, two hundred forty".