42125512455 has 40 divisors (see below), whose sum is σ = 81322651872. Its totient is φ = 20738711232.

The previous prime is 42125512447. The next prime is 42125512511. The reversal of 42125512455 is 55421552124.

42125512455 is a `hidden beast` number, since 42 + 12 + 551 + 2 + 4 + 55 = 666.

42125512455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42125512455 - 2³ = 42125512447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3995259 + ... + 4005788.

Almost surely, 2^42125512455 is an apocalyptic number.

42125512455 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42125512455 is a deficient number, since it is larger than the sum of its proper divisors (39197139417).

42125512455 is a wasteful number, since it uses less digits than its factorization.

42125512455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8001077 (or 8001068 counting only the distinct ones).

The product of its digits is 80000, while the sum is 36.

The spelling of 42125512455 in words is "forty-two billion, one hundred twenty-five million, five hundred twelve thousand, four hundred fifty-five".