401243215 has 8 divisors (see below), whose sum is σ = 481853808. Its totient is φ = 320753280.

The previous prime is 401243209. The next prime is 401243221. The reversal of 401243215 is 512342104.

It is an interprime number because it is at equal distance from previous prime (401243209) and next prime (401243221).

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

It is not a de Polignac number, because 401243215 - 2²¹ = 399146063 is a prime.

It is a super-2 number, since 2×401243215² = 321992235167072450, which contains 22 as substring.

It is a Duffinian number.

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, 22677 + ... + 36286.

It is an arithmetic number, because the mean of its divisors is an integer number (60231726).

Almost surely, 2^401243215 is an apocalyptic number.

401243215 is a deficient number, since it is larger than the sum of its proper divisors (80610593).

401243215 is a wasteful number, since it uses less digits than its factorization.

401243215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60329.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 401243215 is about 20031.0562627137. The cubic root of 401243215 is about 737.5688507970.

Adding to 401243215 its reverse (512342104), we get a palindrome (913585319).

The spelling of 401243215 in words is "four hundred one million, two hundred forty-three thousand, two hundred fifteen".