201342143421 has 8 divisors (see below), whose sum is σ = 298284656960. Its totient is φ = 134228095596.

The previous prime is 201342143417. The next prime is 201342143459. The reversal of 201342143421 is 124341243102.

201342143421 is a `hidden beast` number, since 20 + 1 + 3 + 4 + 214 + 3 + 421 = 666.

It is not a de Polignac number, because 201342143421 - 2² = 201342143417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 7457116423 = 201342143421 / (2 + 0 + 1 + 3 + 4 + 2 + 1 + 4 + 3 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201342143521) 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 7 ways as a sum of consecutive naturals, for example, 3728558185 + ... + 3728558238.

It is an arithmetic number, because the mean of its divisors is an integer number (37285582120).

Almost surely, 2^201342143421 is an apocalyptic number.

It is an amenable number.

201342143421 is a deficient number, since it is larger than the sum of its proper divisors (96942513539).

201342143421 is an equidigital number, since it uses as much as digits as its factorization.

201342143421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7457116432 (or 7457116426 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 201342143421 its reverse (124341243102), we get a palindrome (325683386523).

The spelling of 201342143421 in words is "two hundred one billion, three hundred forty-two million, one hundred forty-three thousand, four hundred twenty-one".