400301121 has 16 divisors (see below), whose sum is σ = 590235840. Its totient is φ = 239281920.

The previous prime is 400301089. The next prime is 400301129. The reversal of 400301121 is 121103004.

It is a happy number.

It is not a de Polignac number, because 400301121 - 2⁵ = 400301089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400301097 and 400301106.

It is not an unprimeable number, because it can be changed into a prime (400301129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80676 + ... + 85493.

It is an arithmetic number, because the mean of its divisors is an integer number (36889740).

Almost surely, 2^400301121 is an apocalyptic number.

It is an amenable number.

400301121 is a deficient number, since it is larger than the sum of its proper divisors (189934719).

400301121 is a wasteful number, since it uses less digits than its factorization.

400301121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166256.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 400301121 is about 20007.5266087540. The cubic root of 400301121 is about 736.9911432271.

Adding to 400301121 its reverse (121103004), we get a palindrome (521404125).

The spelling of 400301121 in words is "four hundred million, three hundred one thousand, one hundred twenty-one".