1121243419 has 4 divisors (see below), whose sum is σ = 1122725344. Its totient is φ = 1119761496.

The previous prime is 1121243413. The next prime is 1121243423. The reversal of 1121243419 is 9143421211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121243419 - 2⁹ = 1121242907 is a prime.

It is a super-2 number, since 2×1121243419² = 2514373609301619122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121243413) 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, 739827 + ... + 741340.

It is an arithmetic number, because the mean of its divisors is an integer number (280681336).

Almost surely, 2^1121243419 is an apocalyptic number.

1121243419 is a deficient number, since it is larger than the sum of its proper divisors (1481925).

1121243419 is an equidigital number, since it uses as much as digits as its factorization.

1121243419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481924.

The product of its digits is 1728, while the sum is 28.

The square root of 1121243419 is about 33484.9730326904. The cubic root of 1121243419 is about 1038.8829904887.

The spelling of 1121243419 in words is "one billion, one hundred twenty-one million, two hundred forty-three thousand, four hundred nineteen".