342055202421 has 16 divisors (see below), whose sum is σ = 460927712000. Its totient is φ = 225611301888.

The previous prime is 342055202413. The next prime is 342055202563. The reversal of 342055202421 is 124202550243.

It is not a de Polignac number, because 342055202421 - 2³ = 342055202413 is a prime.

It is a super-2 number, since 2×342055202421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342055202221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694500 + ... + 1080018.

It is an arithmetic number, because the mean of its divisors is an integer number (28807982000).

Almost surely, 2^342055202421 is an apocalyptic number.

It is an amenable number.

342055202421 is a deficient number, since it is larger than the sum of its proper divisors (118872509579).

342055202421 is a wasteful number, since it uses less digits than its factorization.

342055202421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388668.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 342055202421 its reverse (124202550243), we get a palindrome (466257752664).

The spelling of 342055202421 in words is "three hundred forty-two billion, fifty-five million, two hundred two thousand, four hundred twenty-one".