401200015 has 4 divisors (see below), whose sum is σ = 481440024. Its totient is φ = 320960008.

The previous prime is 401200003. The next prime is 401200061. The reversal of 401200015 is 510002104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 401200015 - 2¹¹ = 401197967 is a prime.

It is a super-2 number, since 2×401200015² = 321922904072000450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401199968 and 401200004.

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 3 ways as a sum of consecutive naturals, for example, 40119997 + ... + 40120006.

It is an arithmetic number, because the mean of its divisors is an integer number (120360006).

Almost surely, 2^401200015 is an apocalyptic number.

401200015 is a deficient number, since it is larger than the sum of its proper divisors (80240009).

401200015 is an equidigital number, since it uses as much as digits as its factorization.

401200015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80240008.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 401200015 is about 20029.9779081256. The cubic root of 401200015 is about 737.5423796388.

Adding to 401200015 its reverse (510002104), we get a palindrome (911202119).

The spelling of 401200015 in words is "four hundred one million, two hundred thousand, fifteen".