1230534 has 24 divisors (see below), whose sum is σ = 2691000. Its totient is φ = 406368.

The previous prime is 1230529. The next prime is 1230539. The reversal of 1230534 is 4350321.

It is an interprime number because it is at equal distance from previous prime (1230529) and next prime (1230539).

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2217 + ... + 2715.

It is an arithmetic number, because the mean of its divisors is an integer number (112125).

2^1230534 is an apocalyptic number.

1230534 is an abundant number, since it is smaller than the sum of its proper divisors (1460466).

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

1230534 is a wasteful number, since it uses less digits than its factorization.

1230534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 641 counting only the distinct ones).

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

The square root of 1230534 is about 1109.2943703093. The cubic root of 1230534 is about 107.1596301360.

Adding to 1230534 its reverse (4350321), we get a palindrome (5580855).

It can be divided in two parts, 1230 and 534, that added together give a square (1764 = 42²).

The spelling of 1230534 in words is "one million, two hundred thirty thousand, five hundred thirty-four".