542421234225 has 144 divisors (see below), whose sum is σ = 1118581656192. Its totient is φ = 248887572480.

The previous prime is 542421234217. The next prime is 542421234253. The reversal of 542421234225 is 522432124245.

542421234225 is a `hidden beast` number, since 5 + 4 + 2 + 421 + 2 + 3 + 4 + 225 = 666.

It is not a de Polignac number, because 542421234225 - 2³ = 542421234217 is a prime.

It is a super-2 number, since 2×542421234225² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 542421234225.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5068722 + ... + 5174628.

It is an arithmetic number, because the mean of its divisors is an integer number (7767928168).

Almost surely, 2^542421234225 is an apocalyptic number.

It is an amenable number.

542421234225 is an abundant number, since it is smaller than the sum of its proper divisors (576160421967).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

542421234225 is a wasteful number, since it uses less digits than its factorization.

542421234225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106056 (or 106048 counting only the distinct ones).

The product of its digits is 153600, while the sum is 36.

The spelling of 542421234225 in words is "five hundred forty-two billion, four hundred twenty-one million, two hundred thirty-four thousand, two hundred twenty-five".