402000122015 has 8 divisors (see below), whose sum is σ = 482716898928. Its totient is φ = 321388929280.

The previous prime is 402000121993. The next prime is 402000122077. The reversal of 402000122015 is 510221000204.

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

It is not a de Polignac number, because 402000122015 - 2²⁰ = 401999073439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402000121984 and 402000122002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26387666 + ... + 26402895.

It is an arithmetic number, because the mean of its divisors is an integer number (60339612366).

Almost surely, 2^402000122015 is an apocalyptic number.

402000122015 is a deficient number, since it is larger than the sum of its proper divisors (80716776913).

402000122015 is a wasteful number, since it uses less digits than its factorization.

402000122015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52792089.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 402000122015 its reverse (510221000204), we get a palindrome (912221122219).

The spelling of 402000122015 in words is "four hundred two billion, one hundred twenty-two thousand, fifteen".