400422130 has 8 divisors (see below), whose sum is σ = 720759852. Its totient is φ = 160168848.

The previous prime is 400422091. The next prime is 400422151. The reversal of 400422130 is 31224004.

It can be written as a sum of positive squares in 2 ways, for example, as 370139121 + 30283009 = 19239^2 + 5503^2 .

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

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, 20021097 + ... + 20021116.

Almost surely, 2^400422130 is an apocalyptic number.

400422130 is a deficient number, since it is larger than the sum of its proper divisors (320337722).

400422130 is a wasteful number, since it uses less digits than its factorization.

400422130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40042220.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 400422130 is about 20010.5504671911. The cubic root of 400422130 is about 737.0653986410.

Adding to 400422130 its reverse (31224004), we get a palindrome (431646134).

The spelling of 400422130 in words is "four hundred million, four hundred twenty-two thousand, one hundred thirty".