1121342407 has 4 divisors (see below), whose sum is σ = 1132902736. Its totient is φ = 1109782080.

The previous prime is 1121342381. The next prime is 1121342413. The reversal of 1121342407 is 7042431211.

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 1121342407 - 2²³ = 1112953799 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 (1121342477) 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, 5780019 + ... + 5780212.

It is an arithmetic number, because the mean of its divisors is an integer number (283225684).

Almost surely, 2^1121342407 is an apocalyptic number.

1121342407 is a deficient number, since it is larger than the sum of its proper divisors (11560329).

1121342407 is an equidigital number, since it uses as much as digits as its factorization.

1121342407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11560328.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1121342407 is about 33486.4510959283. The cubic root of 1121342407 is about 1038.9135618828.

Adding to 1121342407 its reverse (7042431211), we get a palindrome (8163773618).

The spelling of 1121342407 in words is "one billion, one hundred twenty-one million, three hundred forty-two thousand, four hundred seven".