401242401 has 12 divisors (see below), whose sum is σ = 662368512. Its totient is φ = 229281336.

The previous prime is 401242379. The next prime is 401242411. The reversal of 401242401 is 104242104.

401242401 is a `hidden beast` number, since 401 + 24 + 240 + 1 = 666.

It is not a de Polignac number, because 401242401 - 2²¹ = 399145249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (401242411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3184401 + ... + 3184526.

It is an arithmetic number, because the mean of its divisors is an integer number (55197376).

Almost surely, 2^401242401 is an apocalyptic number.

It is an amenable number.

401242401 is a deficient number, since it is larger than the sum of its proper divisors (261126111).

401242401 is a wasteful number, since it uses less digits than its factorization.

401242401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6368940 (or 6368937 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 401242401 is about 20031.0359442541. The cubic root of 401242401 is about 737.5683520293.

Adding to 401242401 its reverse (104242104), we get a palindrome (505484505).

The spelling of 401242401 in words is "four hundred one million, two hundred forty-two thousand, four hundred one".