1111420 has 24 divisors (see below), whose sum is σ = 2374848. Its totient is φ = 436800.

The previous prime is 1111399. The next prime is 1111423. The reversal of 1111420 is 241111.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1111397 and 1111406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 765 + ... + 1675.

It is an arithmetic number, because the mean of its divisors is an integer number (98952).

2^1111420 is an apocalyptic number.

1111420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111420 is an abundant number, since it is smaller than the sum of its proper divisors (1263428).

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

1111420 is a wasteful number, since it uses less digits than its factorization.

1111420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981 (or 979 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1111420 is about 1054.2390620727. The cubic root of 1111420 is about 103.5840138718.

Adding to 1111420 its reverse (241111), we get a palindrome (1352531).

The spelling of 1111420 in words is "one million, one hundred eleven thousand, four hundred twenty".