111421764 has 48 divisors (see below), whose sum is σ = 295928640. Its totient is φ = 36233280.

The previous prime is 111421759. The next prime is 111421769. The reversal of 111421764 is 467124111.

It is an interprime number because it is at equal distance from previous prime (111421759) and next prime (111421769).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (111421769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8154 + ... + 17009.

It is an arithmetic number, because the mean of its divisors is an integer number (6165180).

Almost surely, 2^111421764 is an apocalyptic number.

It is an amenable number.

111421764 is an abundant number, since it is smaller than the sum of its proper divisors (184506876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111421764 is a wasteful number, since it uses less digits than its factorization.

111421764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25217 (or 25209 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 111421764 is about 10555.6508089269. The cubic root of 111421764 is about 481.1974788582.

Adding to 111421764 its reverse (467124111), we get a palindrome (578545875).

It can be divided in two parts, 111 and 421764, that added together give a cube (421875 = 75³).

The spelling of 111421764 in words is "one hundred eleven million, four hundred twenty-one thousand, seven hundred sixty-four".