401243241 has 8 divisors (see below), whose sum is σ = 611418304. Its totient is φ = 229281840.

The previous prime is 401243237. The next prime is 401243243. The reversal of 401243241 is 142342104.

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

It is not a de Polignac number, because 401243241 - 2² = 401243237 is a prime.

It is a super-2 number, since 2×401243241² = 321992276896368162, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 19106821 = 401243241 / (4 + 0 + 1 + 2 + 4 + 3 + 2 + 4 + 1).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (401243243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9553390 + ... + 9553431.

It is an arithmetic number, because the mean of its divisors is an integer number (76427288).

Almost surely, 2^401243241 is an apocalyptic number.

It is an amenable number.

401243241 is a deficient number, since it is larger than the sum of its proper divisors (210175063).

401243241 is a wasteful number, since it uses less digits than its factorization.

401243241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19106831.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 401243241 is about 20031.0569117059. The cubic root of 401243241 is about 737.5688667282.

Adding to 401243241 its reverse (142342104), we get a palindrome (543585345).

It can be divided in two parts, 40124 and 3241, that added together give a triangular number (43365 = T₂₉₄).

The spelling of 401243241 in words is "four hundred one million, two hundred forty-three thousand, two hundred forty-one".