400134001340 has 12 divisors (see below), whose sum is σ = 840281402856. Its totient is φ = 160053600528.

The previous prime is 400134001331. The next prime is 400134001363. The reversal of 400134001340 is 43100431004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 20006700067 = 400134001340 / (4 + 0 + 0 + 1 + 3 + 4 + 0 + 0 + 1 + 3 + 4 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10003350014 + ... + 10003350053.

It is an arithmetic number, because the mean of its divisors is an integer number (70023450238).

Almost surely, 2^400134001340 is an apocalyptic number.

It is an amenable number.

400134001340 is an abundant number, since it is smaller than the sum of its proper divisors (440147401516).

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

400134001340 is a wasteful number, since it uses less digits than its factorization.

400134001340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20006700076 (or 20006700074 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 400134001340 its reverse (43100431004), we get a palindrome (443234432344).

The spelling of 400134001340 in words is "four hundred billion, one hundred thirty-four million, one thousand, three hundred forty".