401152021242 has 32 divisors (see below), whose sum is σ = 946496937984. Its totient is φ = 110917609200.

The previous prime is 401152021229. The next prime is 401152021243. The reversal of 401152021242 is 242120251104.

It is not an unprimeable number, because it can be changed into a prime (401152021243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154050934 + ... + 154053537.

It is an arithmetic number, because the mean of its divisors is an integer number (29578029312).

Almost surely, 2^401152021242 is an apocalyptic number.

401152021242 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

401152021242 is an abundant number, since it is smaller than the sum of its proper divisors (545344916742).

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

401152021242 is a wasteful number, since it uses less digits than its factorization.

401152021242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308104514.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 401152021242 its reverse (242120251104), we get a palindrome (643272272346).

The spelling of 401152021242 in words is "four hundred one billion, one hundred fifty-two million, twenty-one thousand, two hundred forty-two".