111417421 has 2 divisors, whose sum is σ = 111417422. Its totient is φ = 111417420.

The previous prime is 111417407. The next prime is 111417461. The reversal of 111417421 is 124714111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111302500 + 114921 = 10550^2 + 339^2 .

It is a cyclic number.

It is not a de Polignac number, because 111417421 - 2⁹ = 111416909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111417392 and 111417401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111417461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55708710 + 55708711.

It is an arithmetic number, because the mean of its divisors is an integer number (55708711).

Almost surely, 2^111417421 is an apocalyptic number.

It is an amenable number.

111417421 is a deficient number, since it is larger than the sum of its proper divisors (1).

111417421 is an equidigital number, since it uses as much as digits as its factorization.

111417421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 224, while the sum is 22.

The square root of 111417421 is about 10555.4450877261. The cubic root of 111417421 is about 481.1912267349.

The spelling of 111417421 in words is "one hundred eleven million, four hundred seventeen thousand, four hundred twenty-one".