1212930 has 24 divisors (see below), whose sum is σ = 3153852. Its totient is φ = 323424.

The previous prime is 1212923. The next prime is 1212931. The reversal of 1212930 is 392121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1212201 + 729 = 1101^2 + 27^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1212931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6649 + ... + 6828.

2^1212930 is an apocalyptic number.

1212930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212930 is an abundant number, since it is smaller than the sum of its proper divisors (1940922).

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

1212930 is a wasteful number, since it uses less digits than its factorization.

1212930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13490 (or 13487 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1212930 is about 1101.3310129112. The cubic root of 1212930 is about 106.6461657649.

The spelling of 1212930 in words is "one million, two hundred twelve thousand, nine hundred thirty".