142302323421 has 8 divisors (see below), whose sum is σ = 210818256960. Its totient is φ = 94868215596.

The previous prime is 142302323347. The next prime is 142302323477. The reversal of 142302323421 is 124323203241.

142302323421 is a `hidden beast` number, since 1 + 4 + 2 + 3 + 0 + 232 + 3 + 421 = 666.

It is not a de Polignac number, because 142302323421 - 2¹⁰ = 142302322397 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: 5270456423 = 142302323421 / (1 + 4 + 2 + 3 + 0 + 2 + 3 + 2 + 3 + 4 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142302323021) 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, 2635228185 + ... + 2635228238.

It is an arithmetic number, because the mean of its divisors is an integer number (26352282120).

Almost surely, 2^142302323421 is an apocalyptic number.

It is an amenable number.

142302323421 is a deficient number, since it is larger than the sum of its proper divisors (68515933539).

142302323421 is an equidigital number, since it uses as much as digits as its factorization.

142302323421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5270456432 (or 5270456426 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 142302323421 its reverse (124323203241), we get a palindrome (266625526662).

The spelling of 142302323421 in words is "one hundred forty-two billion, three hundred two million, three hundred twenty-three thousand, four hundred twenty-one".