13442440420125 has 48 divisors (see below), whose sum is σ = 24276540629952. Its totient is φ = 7156194645600.

The previous prime is 13442440420103. The next prime is 13442440420243. The reversal of 13442440420125 is 52102404424431.

13442440420125 is a `hidden beast` number, since 1 + 3 + 4 + 4 + 2 + 440 + 4 + 201 + 2 + 5 = 666.

It is not a de Polignac number, because 13442440420125 - 2¹² = 13442440416029 is a prime.

It is a super-2 number, since 2×13442440420125² (a number of 27 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 13442440420125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10306779 + ... + 11537528.

It is an arithmetic number, because the mean of its divisors is an integer number (505761263124).

Almost surely, 2^{13442440420125} is an apocalyptic number.

13442440420125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13442440420125 is a deficient number, since it is larger than the sum of its proper divisors (10834100209827).

13442440420125 is a wasteful number, since it uses less digits than its factorization.

13442440420125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21844875 (or 21844862 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 36.

Adding to 13442440420125 its reverse (52102404424431), we get a palindrome (65544844844556).

The spelling of 13442440420125 in words is "thirteen trillion, four hundred forty-two billion, four hundred forty million, four hundred twenty thousand, one hundred twenty-five".