401422143023261 has 2 divisors, whose sum is σ = 401422143023262. Its totient is φ = 401422143023260.

The previous prime is 401422143023197. The next prime is 401422143023267. The reversal of 401422143023261 is 162320341224104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 284883964792036 + 116538178231225 = 16878506^2 + 10795285^2 .

It is a cyclic number.

It is not a de Polignac number, because 401422143023261 - 2⁶ = 401422143023197 is a prime.

It is a super-2 number, since 2×401422143023261² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401422143023267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200711071511630 + 200711071511631.

It is an arithmetic number, because the mean of its divisors is an integer number (200711071511631).

Almost surely, 2^{401422143023261} is an apocalyptic number.

It is an amenable number.

401422143023261 is a deficient number, since it is larger than the sum of its proper divisors (1).

401422143023261 is an equidigital number, since it uses as much as digits as its factorization.

401422143023261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 35.

Adding to 401422143023261 its reverse (162320341224104), we get a palindrome (563742484247365).

The spelling of 401422143023261 in words is "four hundred one trillion, four hundred twenty-two billion, one hundred forty-three million, twenty-three thousand, two hundred sixty-one".