111401729 has 2 divisors, whose sum is σ = 111401730. Its totient is φ = 111401728.

The previous prime is 111401651. The next prime is 111401743. The reversal of 111401729 is 927104111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89264704 + 22137025 = 9448^2 + 4705^2 .

It is a cyclic number.

It is not a de Polignac number, because 111401729 - 2¹² = 111397633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111401698 and 111401707.

It is not a weakly prime, because it can be changed into another prime (111401779) 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, 55700864 + 55700865.

It is an arithmetic number, because the mean of its divisors is an integer number (55700865).

Almost surely, 2^111401729 is an apocalyptic number.

It is an amenable number.

111401729 is a deficient number, since it is larger than the sum of its proper divisors (1).

111401729 is an equidigital number, since it uses as much as digits as its factorization.

111401729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 111401729 is about 10554.7017485100. The cubic root of 111401729 is about 481.1686353928.

The spelling of 111401729 in words is "one hundred eleven million, four hundred one thousand, seven hundred twenty-nine".