142421601655503 has 20 divisors (see below), whose sum is σ = 214027228411920. Its totient is φ = 94379185120032.

The previous prime is 142421601655447. The next prime is 142421601655591. The reversal of 142421601655503 is 305556106124241.

142421601655503 is a `hidden beast` number, since 1 + 4 + 2 + 4 + 21 + 60 + 1 + 65 + 5 + 503 = 666.

It is not a de Polignac number, because 142421601655503 - 2¹⁸ = 142421601393359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142421601255503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5264331918 + ... + 5264358971.

It is an arithmetic number, because the mean of its divisors is an integer number (10701361420596).

Almost surely, 2^{142421601655503} is an apocalyptic number.

142421601655503 is a deficient number, since it is larger than the sum of its proper divisors (71605626756417).

142421601655503 is a wasteful number, since it uses less digits than its factorization.

142421601655503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10528691068 (or 10528691059 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

Adding to 142421601655503 its reverse (305556106124241), we get a palindrome (447977707779744).

The spelling of 142421601655503 in words is "one hundred forty-two trillion, four hundred twenty-one billion, six hundred one million, six hundred fifty-five thousand, five hundred three".