1215234 has 24 divisors (see below), whose sum is σ = 2654652. Its totient is φ = 401760.

The previous prime is 1215229. The next prime is 1215239. The reversal of 1215234 is 4325121.

It is an interprime number because it is at equal distance from previous prime (1215229) and next prime (1215239).

It can be written as a sum of positive squares in 2 ways, for example, as 1096209 + 119025 = 1047^2 + 345^2 .

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 (1215239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3072 + ... + 3444.

2^1215234 is an apocalyptic number.

1215234 is an abundant number, since it is smaller than the sum of its proper divisors (1439418).

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

1215234 is a wasteful number, since it uses less digits than its factorization.

1215234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 559 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 1215234 is about 1102.3765236978. The cubic root of 1215234 is about 106.7136490080.

The spelling of 1215234 in words is "one million, two hundred fifteen thousand, two hundred thirty-four".