42240725055 has 24 divisors (see below), whose sum is σ = 73223626320. Its totient is φ = 22526426880.

The previous prime is 42240725041. The next prime is 42240725069. The reversal of 42240725055 is 55052704224.

42240725055 is a `hidden beast` number, since 42 + 2 + 40 + 72 + 505 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (42240725041) and next prime (42240725069).

It is not a de Polignac number, because 42240725055 - 2¹³ = 42240716863 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 588936 + ... + 656754.

It is an arithmetic number, because the mean of its divisors is an integer number (3050984430).

Almost surely, 2^42240725055 is an apocalyptic number.

42240725055 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42240725055 is a deficient number, since it is larger than the sum of its proper divisors (30982901265).

42240725055 is a wasteful number, since it uses less digits than its factorization.

42240725055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81671 (or 81668 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 36.

The spelling of 42240725055 in words is "forty-two billion, two hundred forty million, seven hundred twenty-five thousand, fifty-five".