400512542135 has 8 divisors (see below), whose sum is σ = 497187983520. Its totient is φ = 309361411744.

The previous prime is 400512542093. The next prime is 400512542173. The reversal of 400512542135 is 531245215004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400512542135 - 2⁶ = 400512542071 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1381077587 + ... + 1381077876.

It is an arithmetic number, because the mean of its divisors is an integer number (62148497940).

Almost surely, 2^400512542135 is an apocalyptic number.

400512542135 is a deficient number, since it is larger than the sum of its proper divisors (96675441385).

400512542135 is a wasteful number, since it uses less digits than its factorization.

400512542135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2762155497.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 400512542135 its reverse (531245215004), we get a palindrome (931757757139).

The spelling of 400512542135 in words is "four hundred billion, five hundred twelve million, five hundred forty-two thousand, one hundred thirty-five".