142326346361221 has 4 divisors (see below), whose sum is σ = 155265105121344. Its totient is φ = 129387587601100.

The previous prime is 142326346361209. The next prime is 142326346361237. The reversal of 142326346361221 is 122163643623241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142326346361221 - 2¹¹ = 142326346359173 is a prime.

It is a super-2 number, since 2×142326346361221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142326346361201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6469379380045 + ... + 6469379380066.

It is an arithmetic number, because the mean of its divisors is an integer number (38816276280336).

Almost surely, 2^{142326346361221} is an apocalyptic number.

142326346361221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142326346361221 is a deficient number, since it is larger than the sum of its proper divisors (12938758760123).

142326346361221 is a wasteful number, since it uses less digits than its factorization.

142326346361221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12938758760122.

The product of its digits is 1492992, while the sum is 46.

Adding to 142326346361221 its reverse (122163643623241), we get a palindrome (264489989984462).

The spelling of 142326346361221 in words is "one hundred forty-two trillion, three hundred twenty-six billion, three hundred forty-six million, three hundred sixty-one thousand, two hundred twenty-one".