111402125 has 16 divisors (see below), whose sum is σ = 142427376. Its totient is φ = 86944000.

The previous prime is 111402119. The next prime is 111402143. The reversal of 111402125 is 521204111.

It can be written as a sum of positive squares in 8 ways, for example, as 93644329 + 17757796 = 9677^2 + 4214^2 .

It is not a de Polignac number, because 111402125 - 2¹⁴ = 111385741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5744 + ... + 15993.

It is an arithmetic number, because the mean of its divisors is an integer number (8901711).

Almost surely, 2^111402125 is an apocalyptic number.

It is an amenable number.

111402125 is a deficient number, since it is larger than the sum of its proper divisors (31025251).

111402125 is an equidigital number, since it uses as much as digits as its factorization.

111402125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21793 (or 21783 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 111402125 is about 10554.7205079055. The cubic root of 111402125 is about 481.1692055292.

Adding to 111402125 its reverse (521204111), we get a palindrome (632606236).

The spelling of 111402125 in words is "one hundred eleven million, four hundred two thousand, one hundred twenty-five".