1212530453 has 8 divisors (see below), whose sum is σ = 1222663680. Its totient is φ = 1202425200.

The previous prime is 1212530447. The next prime is 1212530461. The reversal of 1212530453 is 3540352121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212530453 - 2⁴ = 1212530437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212530443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85043 + ... + 98271.

It is an arithmetic number, because the mean of its divisors is an integer number (152832960).

Almost surely, 2^1212530453 is an apocalyptic number.

It is an amenable number.

1212530453 is a deficient number, since it is larger than the sum of its proper divisors (10133227).

1212530453 is a wasteful number, since it uses less digits than its factorization.

1212530453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13987.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1212530453 is about 34821.4079698108. The cubic root of 1212530453 is about 1066.3445449960.

Adding to 1212530453 its reverse (3540352121), we get a palindrome (4752882574).

The spelling of 1212530453 in words is "one billion, two hundred twelve million, five hundred thirty thousand, four hundred fifty-three".