20003121403142 has 8 divisors (see below), whose sum is σ = 30005928684432. Its totient is φ = 10001145175000.

The previous prime is 20003121403103. The next prime is 20003121403159. The reversal of 20003121403142 is 24130412130002.

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

It is a congruent number.

It is an unprimeable number.

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, 207703109 + ... + 207799392.

It is an arithmetic number, because the mean of its divisors is an integer number (3750741085554).

Almost surely, 2^{20003121403142} is an apocalyptic number.

20003121403142 is a deficient number, since it is larger than the sum of its proper divisors (10002807281290).

20003121403142 is a wasteful number, since it uses less digits than its factorization.

20003121403142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415526574.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20003121403142 its reverse (24130412130002), we get a palindrome (44133533533144).

The spelling of 20003121403142 in words is "twenty trillion, three billion, one hundred twenty-one million, four hundred three thousand, one hundred forty-two".