401017242 has 8 divisors (see below), whose sum is σ = 802034496. Its totient is φ = 133672412.

The previous prime is 401017237. The next prime is 401017273. The reversal of 401017242 is 242710104.

It is a happy number.

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

401017242 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33418098 + ... + 33418109.

It is an arithmetic number, because the mean of its divisors is an integer number (100254312).

Almost surely, 2^401017242 is an apocalyptic number.

401017242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401017242 is a wasteful number, since it uses less digits than its factorization.

401017242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66836212.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 401017242 is about 20025.4149020688. The cubic root of 401017242 is about 737.4303629355.

Adding to 401017242 its reverse (242710104), we get a palindrome (643727346).

The spelling of 401017242 in words is "four hundred one million, seventeen thousand, two hundred forty-two".