1154342213 has 4 divisors (see below), whose sum is σ = 1154737920. Its totient is φ = 1153946508.

The previous prime is 1154342209. The next prime is 1154342221. The reversal of 1154342213 is 3122434511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1154342213 - 2² = 1154342209 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 (1154342113) 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, 193445 + ... + 199322.

It is an arithmetic number, because the mean of its divisors is an integer number (288684480).

Almost surely, 2^1154342213 is an apocalyptic number.

It is an amenable number.

1154342213 is a deficient number, since it is larger than the sum of its proper divisors (395707).

1154342213 is an equidigital number, since it uses as much as digits as its factorization.

1154342213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395706.

The product of its digits is 2880, while the sum is 26.

The square root of 1154342213 is about 33975.6120327508. The cubic root of 1154342213 is about 1049.0065321235.

Adding to 1154342213 its reverse (3122434511), we get a palindrome (4276776724).

The spelling of 1154342213 in words is "one billion, one hundred fifty-four million, three hundred forty-two thousand, two hundred thirteen".