111420524 has 12 divisors (see below), whose sum is σ = 197177400. Its totient is φ = 55084128.

The previous prime is 111420521. The next prime is 111420527. The reversal of 111420524 is 425024111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111420521) and next prime (111420527).

It is a junction number, because it is equal to n+sod(n) for n = 111420496 and 111420505.

It is not an unprimeable number, because it can be changed into a prime (111420521) 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 in 3 ways as a sum of consecutive naturals, for example, 156134 + ... + 156845.

It is an arithmetic number, because the mean of its divisors is an integer number (16431450).

Almost surely, 2^111420524 is an apocalyptic number.

It is an amenable number.

111420524 is a deficient number, since it is larger than the sum of its proper divisors (85756876).

111420524 is a wasteful number, since it uses less digits than its factorization.

111420524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313072 (or 313070 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 111420524 is about 10555.5920724515. The cubic root of 111420524 is about 481.1956937878.

Adding to 111420524 its reverse (425024111), we get a palindrome (536444635).

The spelling of 111420524 in words is "one hundred eleven million, four hundred twenty thousand, five hundred twenty-four".