1102420 has 24 divisors (see below), whose sum is σ = 2526048. Its totient is φ = 400800.

The previous prime is 1102411. The next prime is 1102427. The reversal of 1102420 is 242011.

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 = 1102397 and 1102406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102427) 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, 2286 + ... + 2725.

It is an arithmetic number, because the mean of its divisors is an integer number (105252).

2^1102420 is an apocalyptic number.

1102420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1102420 is an abundant number, since it is smaller than the sum of its proper divisors (1423628).

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

1102420 is a wasteful number, since it uses less digits than its factorization.

1102420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031 (or 5029 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1102420 is about 1049.9619040708. The cubic root of 1102420 is about 103.3036566415.

Adding to 1102420 its reverse (242011), we get a palindrome (1344431).

The spelling of 1102420 in words is "one million, one hundred two thousand, four hundred twenty".