142421304345 has 64 divisors (see below), whose sum is σ = 242307936000. Its totient is φ = 71185596416.

The previous prime is 142421304343. The next prime is 142421304349. The reversal of 142421304345 is 543403124241.

It is a cyclic number.

It is not a de Polignac number, because 142421304345 - 2¹ = 142421304343 is a prime.

It is a super-2 number, since 2×142421304345² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142421304343) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 101079001 + ... + 101080409.

It is an arithmetic number, because the mean of its divisors is an integer number (3786061500).

Almost surely, 2^142421304345 is an apocalyptic number.

142421304345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142421304345 is a deficient number, since it is larger than the sum of its proper divisors (99886631655).

142421304345 is a wasteful number, since it uses less digits than its factorization.

142421304345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 142421304345 its reverse (543403124241), we get a palindrome (685824428586).

The spelling of 142421304345 in words is "one hundred forty-two billion, four hundred twenty-one million, three hundred four thousand, three hundred forty-five".