24138642 has 32 divisors (see below), whose sum is σ = 52844544. Its totient is φ = 7290000.

The previous prime is 24138637. The next prime is 24138649. The reversal of 24138642 is 24683142.

It is not an unprimeable number, because it can be changed into a prime (24138649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31767 + ... + 32517.

It is an arithmetic number, because the mean of its divisors is an integer number (1651392).

Almost surely, 2^24138642 is an apocalyptic number.

24138642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

24138642 is an abundant number, since it is smaller than the sum of its proper divisors (28705902).

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

24138642 is a wasteful number, since it uses less digits than its factorization.

24138642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254.

The product of its digits is 9216, while the sum is 30.

The square root of 24138642 is about 4913.1091988679. The cubic root of 24138642 is about 289.0042822927.

It can be divided in two parts, 241 and 38642, that added together give a palindrome (38883).

The spelling of 24138642 in words is "twenty-four million, one hundred thirty-eight thousand, six hundred forty-two".