101442401 has 2 divisors, whose sum is σ = 101442402. Its totient is φ = 101442400.

The previous prime is 101442391. The next prime is 101442409. The reversal of 101442401 is 104244101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100000000 + 1442401 = 10000^2 + 1201^2 .

It is a cyclic number.

It is not a de Polignac number, because 101442401 - 2⁶ = 101442337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101442401.

It is not a weakly prime, because it can be changed into another prime (101442409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50721200 + 50721201.

It is an arithmetic number, because the mean of its divisors is an integer number (50721201).

Almost surely, 2^101442401 is an apocalyptic number.

It is an amenable number.

101442401 is a deficient number, since it is larger than the sum of its proper divisors (1).

101442401 is an equidigital number, since it uses as much as digits as its factorization.

101442401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 101442401 is about 10071.8618437705. The cubic root of 101442401 is about 466.3799160713.

Adding to 101442401 its reverse (104244101), we get a palindrome (205686502).

The spelling of 101442401 in words is "one hundred one million, four hundred forty-two thousand, four hundred one".