142321345413621 has 16 divisors (see below), whose sum is σ = 208947565744128. Its totient is φ = 85449235986800.

The previous prime is 142321345413613. The next prime is 142321345413631. The reversal of 142321345413621 is 126314543123241.

It is a cyclic number.

It is not a de Polignac number, because 142321345413621 - 2³ = 142321345413613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142321345413631) 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, 20153118165 + ... + 20153125226.

It is an arithmetic number, because the mean of its divisors is an integer number (13059222859008).

Almost surely, 2^{142321345413621} is an apocalyptic number.

142321345413621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142321345413621 is a deficient number, since it is larger than the sum of its proper divisors (66626220330507).

142321345413621 is a wasteful number, since it uses less digits than its factorization.

142321345413621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40306243512.

The product of its digits is 414720, while the sum is 42.

Adding to 142321345413621 its reverse (126314543123241), we get a palindrome (268635888536862).

The spelling of 142321345413621 in words is "one hundred forty-two trillion, three hundred twenty-one billion, three hundred forty-five million, four hundred thirteen thousand, six hundred twenty-one".