21024414042 has 16 divisors (see below), whose sum is σ = 42074072352. Its totient is φ = 7003930640.

The previous prime is 21024414007. The next prime is 21024414043. The reversal of 21024414042 is 24041442012.

It is not an unprimeable number, because it can be changed into a prime (21024414043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1041009 + ... + 1061012.

It is an arithmetic number, because the mean of its divisors is an integer number (2629629522).

Almost surely, 2^21024414042 is an apocalyptic number.

21024414042 is an abundant number, since it is smaller than the sum of its proper divisors (21049658310).

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

21024414042 is a wasteful number, since it uses less digits than its factorization.

21024414042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103693.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 21024414042 its reverse (24041442012), we get a palindrome (45065856054).

It can be divided in two parts, 2102 and 4414042, that added together give a palindrome (4416144).

The spelling of 21024414042 in words is "twenty-one billion, twenty-four million, four hundred fourteen thousand, forty-two".