142404441421 has 16 divisors (see below), whose sum is σ = 156643901568. Its totient is φ = 128383488000.

The previous prime is 142404441353. The next prime is 142404441469. The reversal of 142404441421 is 124144404241.

It is a cyclic number.

It is not a de Polignac number, because 142404441421 - 2⁹ = 142404440909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142404447421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 912685 + ... + 1057261.

It is an arithmetic number, because the mean of its divisors is an integer number (9790243848).

Almost surely, 2^142404441421 is an apocalyptic number.

142404441421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142404441421 is a deficient number, since it is larger than the sum of its proper divisors (14239460147).

142404441421 is a wasteful number, since it uses less digits than its factorization.

142404441421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145332.

The product of its (nonzero) digits is 16384, while the sum is 31.

Adding to 142404441421 its reverse (124144404241), we get a palindrome (266548845662).

The spelling of 142404441421 in words is "one hundred forty-two billion, four hundred four million, four hundred forty-one thousand, four hundred twenty-one".