1215342452 has 12 divisors (see below), whose sum is σ = 2132209380. Its totient is φ = 606139776.

The previous prime is 1215342451. The next prime is 1215342493. The reversal of 1215342452 is 2542435121.

It can be written as a sum of positive squares in 2 ways, for example, as 878766736 + 336575716 = 29644^2 + 18346^2 .

It is a super-3 number, since 3×1215342452³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215342451) 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, 381077 + ... + 384252.

It is an arithmetic number, because the mean of its divisors is an integer number (177684115).

Almost surely, 2^1215342452 is an apocalyptic number.

It is an amenable number.

1215342452 is a deficient number, since it is larger than the sum of its proper divisors (916866928).

1215342452 is a wasteful number, since it uses less digits than its factorization.

1215342452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765730 (or 765728 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 1215342452 is about 34861.7620323471. The cubic root of 1215342452 is about 1067.1682342116.

Adding to 1215342452 its reverse (2542435121), we get a palindrome (3757777573).

The spelling of 1215342452 in words is "one billion, two hundred fifteen million, three hundred forty-two thousand, four hundred fifty-two".