42520250511 has 16 divisors (see below), whose sum is σ = 63054701920. Its totient is φ = 28319051520.

The previous prime is 42520250477. The next prime is 42520250543. The reversal of 42520250511 is 11505202524.

42520250511 is a `hidden beast` number, since 42 + 520 + 2 + 50 + 51 + 1 = 666.

It is not a de Polignac number, because 42520250511 - 2¹⁰ = 42520249487 is a prime.

It is a super-2 number, since 2×42520250511² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42520250561) 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, 743650 + ... + 798783.

It is an arithmetic number, because the mean of its divisors is an integer number (3940918870).

Almost surely, 2^42520250511 is an apocalyptic number.

42520250511 is a deficient number, since it is larger than the sum of its proper divisors (20534451409).

42520250511 is a wasteful number, since it uses less digits than its factorization.

42520250511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543463 (or 1543457 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The spelling of 42520250511 in words is "forty-two billion, five hundred twenty million, two hundred fifty thousand, five hundred eleven".