142323515543421 has 8 divisors (see below), whose sum is σ = 210849652656960. Its totient is φ = 94882343695596.

The previous prime is 142323515543371. The next prime is 142323515543491. The reversal of 142323515543421 is 124345515323241.

142323515543421 is a `hidden beast` number, since 1 + 4 + 2 + 3 + 2 + 3 + 51 + 554 + 3 + 42 + 1 = 666.

142323515543421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142323515543421 - 2⁴² = 137925469032317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142323515543491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2635620658185 + ... + 2635620658238.

It is an arithmetic number, because the mean of its divisors is an integer number (26356206582120).

Almost surely, 2^{142323515543421} is an apocalyptic number.

It is an amenable number.

142323515543421 is a deficient number, since it is larger than the sum of its proper divisors (68526137113539).

142323515543421 is an equidigital number, since it uses as much as digits as its factorization.

142323515543421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5271241316432 (or 5271241316426 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 45.

The spelling of 142323515543421 in words is "one hundred forty-two trillion, three hundred twenty-three billion, five hundred fifteen million, five hundred forty-three thousand, four hundred twenty-one".