401543122 has 4 divisors (see below), whose sum is σ = 602314686. Its totient is φ = 200771560.

The previous prime is 401543119. The next prime is 401543123. The reversal of 401543122 is 221345104.

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., 333464121 + 68079001 = 18261^2 + 8251^2 .

It is a super-2 number, since 2×401543122² = 322473757651013768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401543093 and 401543102.

It is not an unprimeable number, because it can be changed into a prime (401543123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100385779 + ... + 100385782.

Almost surely, 2^401543122 is an apocalyptic number.

401543122 is a deficient number, since it is larger than the sum of its proper divisors (200771564).

401543122 is a wasteful number, since it uses less digits than its factorization.

401543122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200771563.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 401543122 is about 20038.5409149469. The cubic root of 401543122 is about 737.7525689376.

Adding to 401543122 its reverse (221345104), we get a palindrome (622888226).

The spelling of 401543122 in words is "four hundred one million, five hundred forty-three thousand, one hundred twenty-two".