401142061 has 2 divisors, whose sum is σ = 401142062. Its totient is φ = 401142060.

The previous prime is 401142031. The next prime is 401142083. The reversal of 401142061 is 160241104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 398601225 + 2540836 = 19965^2 + 1594^2 .

It is a cyclic number.

It is not a de Polignac number, because 401142061 - 2⁹ = 401141549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401142031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200571030 + 200571031.

It is an arithmetic number, because the mean of its divisors is an integer number (200571031).

Almost surely, 2^401142061 is an apocalyptic number.

It is an amenable number.

401142061 is a deficient number, since it is larger than the sum of its proper divisors (1).

401142061 is an equidigital number, since it uses as much as digits as its factorization.

401142061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 401142061 is about 20028.5311743023. The cubic root of 401142061 is about 737.5068648600.

Adding to 401142061 its reverse (160241104), we get a palindrome (561383165).

The spelling of 401142061 in words is "four hundred one million, one hundred forty-two thousand, sixty-one".