142445340216421 has 8 divisors (see below), whose sum is σ = 155397167539488. Its totient is φ = 129493888050000.

The previous prime is 142445340216401. The next prime is 142445340216437. The reversal of 142445340216421 is 124612043544241.

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

It is a cyclic number.

It is not a de Polignac number, because 142445340216421 - 2⁷ = 142445340216293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142445340216401) 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, 92994955 + ... + 94514296.

It is an arithmetic number, because the mean of its divisors is an integer number (19424645942436).

Almost surely, 2^{142445340216421} is an apocalyptic number.

142445340216421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142445340216421 is a deficient number, since it is larger than the sum of its proper divisors (12951827323067).

142445340216421 is a wasteful number, since it uses less digits than its factorization.

142445340216421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187578323.

The product of its (nonzero) digits is 737280, while the sum is 43.

The spelling of 142445340216421 in words is "one hundred forty-two trillion, four hundred forty-five billion, three hundred forty million, two hundred sixteen thousand, four hundred twenty-one".