401224542242 has 4 divisors (see below), whose sum is σ = 601836813366. Its totient is φ = 200612271120.

The previous prime is 401224542221. The next prime is 401224542259. The reversal of 401224542242 is 242245422104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 394975797841 + 6248744401 = 628471^2 + 79049^2 .

It is a super-2 number, since 2×401224542242² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401224542199 and 401224542208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100306135559 + ... + 100306135562.

Almost surely, 2^401224542242 is an apocalyptic number.

401224542242 is a deficient number, since it is larger than the sum of its proper divisors (200612271124).

401224542242 is a wasteful number, since it uses less digits than its factorization.

401224542242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200612271123.

The product of its (nonzero) digits is 40960, while the sum is 32.

Adding to 401224542242 its reverse (242245422104), we get a palindrome (643469964346).

The spelling of 401224542242 in words is "four hundred one billion, two hundred twenty-four million, five hundred forty-two thousand, two hundred forty-two".