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1350421 = 1936997
BaseRepresentation
bin101001001101100010101
32112121102121
411021230111
5321203141
644535541
714323042
oct5115425
92477377
101350421
11842656
125515b1
13383887
142721c9
151ba1d1
hex149b15

1350421 has 4 divisors (see below), whose sum is σ = 1357612. Its totient is φ = 1343232.

The previous prime is 1350403. The next prime is 1350449. The reversal of 1350421 is 1240531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1240531 = 8211511.

It can be written as a sum of positive squares in 2 ways, for example, as 378225 + 972196 = 615^2 + 986^2 .

It is a cyclic number.

It is not a de Polignac number, because 1350421 - 217 = 1219349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1350395 and 1350404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1350521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3306 + ... + 3691.

It is an arithmetic number, because the mean of its divisors is an integer number (339403).

21350421 is an apocalyptic number.

It is an amenable number.

1350421 is a deficient number, since it is larger than the sum of its proper divisors (7191).

1350421 is an equidigital number, since it uses as much as digits as its factorization.

1350421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7190.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1350421 is about 1162.0761592942. The cubic root of 1350421 is about 110.5324324856.

Adding to 1350421 its reverse (1240531), we get a palindrome (2590952).

It can be divided in two parts, 1350 and 421, that added together give a palindrome (1771).

The spelling of 1350421 in words is "one million, three hundred fifty thousand, four hundred twenty-one".

Divisors: 1 193 6997 1350421