401442020522 has 4 divisors (see below), whose sum is σ = 602163030786. Its totient is φ = 200721010260.

The previous prime is 401442020521. The next prime is 401442020531. The reversal of 401442020522 is 225020244104.

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., 380480482561 + 20961537961 = 616831^2 + 144781^2 .

It is a super-2 number, since 2×401442020522² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401442020491 and 401442020500.

It is not an unprimeable number, because it can be changed into a prime (401442020521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100360505129 + ... + 100360505132.

Almost surely, 2^401442020522 is an apocalyptic number.

401442020522 is a deficient number, since it is larger than the sum of its proper divisors (200721010264).

401442020522 is a wasteful number, since it uses less digits than its factorization.

401442020522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200721010263.

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 401442020522 its reverse (225020244104), we get a palindrome (626462264626).

The spelling of 401442020522 in words is "four hundred one billion, four hundred forty-two million, twenty thousand, five hundred twenty-two".