1101420 has 72 divisors (see below), whose sum is σ = 3472560. Its totient is φ = 282240.

The previous prime is 1101409. The next prime is 1101421. The reversal of 1101420 is 241011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5115 + ... + 5325.

It is an arithmetic number, because the mean of its divisors is an integer number (48230).

2^1101420 is an apocalyptic number.

1101420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1101420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1736280).

1101420 is an abundant number, since it is smaller than the sum of its proper divisors (2371140).

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

1101420 is a wasteful number, since it uses less digits than its factorization.

1101420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1101420 is about 1049.4855882765. The cubic root of 1101420 is about 103.2724117717.

Adding to 1101420 its reverse (241011), we get a palindrome (1342431).

It can be divided in two parts, 1101 and 420, that added together give a square (1521 = 39²).

The spelling of 1101420 in words is "one million, one hundred one thousand, four hundred twenty".