400120142122 has 8 divisors (see below), whose sum is σ = 606007205856. Its totient is φ = 198117740172.

The previous prime is 400120142113. The next prime is 400120142153. The reversal of 400120142122 is 221241021004.

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

It is a super-2 number, since 2×400120142122² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400120142122.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 971165188 + ... + 971165599.

It is an arithmetic number, because the mean of its divisors is an integer number (75750900732).

Almost surely, 2^400120142122 is an apocalyptic number.

400120142122 is a deficient number, since it is larger than the sum of its proper divisors (205887063734).

400120142122 is a wasteful number, since it uses less digits than its factorization.

400120142122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942330892.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 400120142122 its reverse (221241021004), we get a palindrome (621361163126).

The spelling of 400120142122 in words is "four hundred billion, one hundred twenty million, one hundred forty-two thousand, one hundred twenty-two".