400144130 has 32 divisors (see below), whose sum is σ = 763653744. Its totient is φ = 150439936.

The previous prime is 400144099. The next prime is 400144153. The reversal of 400144130 is 31441004.

It can be written as a sum of positive squares in 8 ways, for example, as 172948801 + 227195329 = 13151^2 + 15073^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 400144099 and 400144108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201824 + ... + 203796.

Almost surely, 2^400144130 is an apocalyptic number.

400144130 is a deficient number, since it is larger than the sum of its proper divisors (363509614).

400144130 is a wasteful number, since it uses less digits than its factorization.

400144130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 400144130 is about 20003.6029254732. The cubic root of 400144130 is about 736.8947856777.

Adding to 400144130 its reverse (31441004), we get a palindrome (431585134).

It can be divided in two parts, 40014 and 4130, that added together give a palindrome (44144).

The spelling of 400144130 in words is "four hundred million, one hundred forty-four thousand, one hundred thirty".