21032103142 has 8 divisors (see below), whose sum is σ = 31557135456. Its totient is φ = 10513057992.

The previous prime is 21032103119. The next prime is 21032103149. The reversal of 21032103142 is 24130123012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032103149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1487998 + ... + 1502065.

It is an arithmetic number, because the mean of its divisors is an integer number (3944641932).

Almost surely, 2^21032103142 is an apocalyptic number.

21032103142 is a deficient number, since it is larger than the sum of its proper divisors (10525032314).

21032103142 is a wasteful number, since it uses less digits than its factorization.

21032103142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2993582.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21032103142 its reverse (24130123012), we get a palindrome (45162226154).

The spelling of 21032103142 in words is "twenty-one billion, thirty-two million, one hundred three thousand, one hundred forty-two".