405525738042 has 12 divisors (see below), whose sum is σ = 878639099130. Its totient is φ = 135175246008.

The previous prime is 405525738001. The next prime is 405525738061. The reversal of 405525738042 is 240837525504.

405525738042 is a `hidden beast` number, since 4 + 0 + 5 + 525 + 7 + 3 + 80 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 377756515161 + 27769222881 = 614619^2 + 166641^2 .

It is a super-2 number, since 2×405525738042² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11264603817 + ... + 11264603852.

Almost surely, 2^405525738042 is an apocalyptic number.

405525738042 is an abundant number, since it is smaller than the sum of its proper divisors (473113361088).

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

405525738042 is a wasteful number, since it uses less digits than its factorization.

405525738042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22529207677 (or 22529207674 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 45.

The spelling of 405525738042 in words is "four hundred five billion, five hundred twenty-five million, seven hundred thirty-eight thousand, forty-two".