400144342135 has 8 divisors (see below), whose sum is σ = 483048500256. Its totient is φ = 318198613920.

The previous prime is 400144342121. The next prime is 400144342189. The reversal of 400144342135 is 531243441004.

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

It is not a de Polignac number, because 400144342135 - 2¹¹ = 400144340087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400144342097 and 400144342106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239606556 + ... + 239608225.

It is an arithmetic number, because the mean of its divisors is an integer number (60381062532).

Almost surely, 2^400144342135 is an apocalyptic number.

400144342135 is a deficient number, since it is larger than the sum of its proper divisors (82904158121).

400144342135 is a wasteful number, since it uses less digits than its factorization.

400144342135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479214953.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 400144342135 its reverse (531243441004), we get a palindrome (931387783139).

The spelling of 400144342135 in words is "four hundred billion, one hundred forty-four million, three hundred forty-two thousand, one hundred thirty-five".