400520122435 has 32 divisors (see below), whose sum is σ = 491230199808. Its totient is φ = 313425315840.

The previous prime is 400520122423. The next prime is 400520122439. The reversal of 400520122435 is 534221025004.

It is not a de Polignac number, because 400520122435 - 2⁵ = 400520122403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400520122439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26233614 + ... + 26248876.

It is an arithmetic number, because the mean of its divisors is an integer number (15350943744).

Almost surely, 2^400520122435 is an apocalyptic number.

400520122435 is a deficient number, since it is larger than the sum of its proper divisors (90710077373).

400520122435 is a wasteful number, since it uses less digits than its factorization.

400520122435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15915.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 400520122435 its reverse (534221025004), we get a palindrome (934741147439).

The spelling of 400520122435 in words is "four hundred billion, five hundred twenty million, one hundred twenty-two thousand, four hundred thirty-five".