1245330 has 48 divisors (see below), whose sum is σ = 3293784. Its totient is φ = 326400.

The previous prime is 1245281. The next prime is 1245331. The reversal of 1245330 is 335421.

It can be written as a sum of positive squares in 4 ways, for example, as 1225449 + 19881 = 1107^2 + 141^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1245331) 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, 9022 + ... + 9158.

2^1245330 is an apocalyptic number.

1245330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1646892).

1245330 is an abundant number, since it is smaller than the sum of its proper divisors (2048454).

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

1245330 is a wasteful number, since it uses less digits than its factorization.

1245330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 1245330 is about 1115.9435469593. The cubic root of 1245330 is about 107.5874176265.

Subtracting from 1245330 its reverse (335421), we obtain a palindrome (909909).

The spelling of 1245330 in words is "one million, two hundred forty-five thousand, three hundred thirty".