1201420 has 48 divisors (see below), whose sum is σ = 2838528. Its totient is φ = 423360.

The previous prime is 1201381. The next prime is 1201439. The reversal of 1201420 is 241021.

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 = 1201397 and 1201406.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9397 + ... + 9523.

It is an arithmetic number, because the mean of its divisors is an integer number (59136).

2^1201420 is an apocalyptic number.

1201420 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 1201420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1419264).

1201420 is an abundant number, since it is smaller than the sum of its proper divisors (1637108).

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

1201420 is a wasteful number, since it uses less digits than its factorization.

1201420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 188 counting only the distinct ones).

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

The square root of 1201420 is about 1096.0930617425. The cubic root of 1201420 is about 106.3077563725.

Adding to 1201420 its reverse (241021), we get a palindrome (1442441).

It can be divided in two parts, 120 and 1420, that added together give a triangular number (1540 = T₅₅).

The spelling of 1201420 in words is "one million, two hundred one thousand, four hundred twenty".