401242443 has 8 divisors (see below), whose sum is σ = 611417088. Its totient is φ = 229281384.

The previous prime is 401242427. The next prime is 401242447. The reversal of 401242443 is 344242104.

It is a happy number.

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

It is not a de Polignac number, because 401242443 - 2⁴ = 401242427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (401242447) 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, 9553371 + ... + 9553412.

It is an arithmetic number, because the mean of its divisors is an integer number (76427136).

Almost surely, 2^401242443 is an apocalyptic number.

401242443 is a deficient number, since it is larger than the sum of its proper divisors (210174645).

401242443 is a wasteful number, since it uses less digits than its factorization.

401242443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19106793.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 401242443 is about 20031.0369926272. The cubic root of 401242443 is about 737.5683777643.

Adding to 401242443 its reverse (344242104), we get a palindrome (745484547).

The spelling of 401242443 in words is "four hundred one million, two hundred forty-two thousand, four hundred forty-three".