400122430 has 16 divisors (see below), whose sum is σ = 720496944. Its totient is φ = 159987520.

The previous prime is 400122413. The next prime is 400122431. The reversal of 400122430 is 34221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400122431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27210 + ... + 39250.

It is an arithmetic number, because the mean of its divisors is an integer number (45031059).

Almost surely, 2^400122430 is an apocalyptic number.

400122430 is a deficient number, since it is larger than the sum of its proper divisors (320374514).

400122430 is a wasteful number, since it uses less digits than its factorization.

400122430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15371.

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

The square root of 400122430 is about 20003.0605158311. The cubic root of 400122430 is about 736.8814647226.

Adding to 400122430 its reverse (34221004), we get a palindrome (434343434).

The spelling of 400122430 in words is "four hundred million, one hundred twenty-two thousand, four hundred thirty".