1121242340 has 24 divisors (see below), whose sum is σ = 2404708992. Its totient is φ = 438954080.

The previous prime is 1121242333. The next prime is 1121242349. The reversal of 1121242340 is 432421211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1121242349) 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, 595466 + ... + 597345.

It is an arithmetic number, because the mean of its divisors is an integer number (100196208).

Almost surely, 2^1121242340 is an apocalyptic number.

1121242340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121242340 is an abundant number, since it is smaller than the sum of its proper divisors (1283466652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121242340 is a wasteful number, since it uses less digits than its factorization.

1121242340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192867 (or 1192865 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1121242340 is about 33484.9569209817. The cubic root of 1121242340 is about 1038.8826572411.

Adding to 1121242340 its reverse (432421211), we get a palindrome (1553663551).

The spelling of 1121242340 in words is "one billion, one hundred twenty-one million, two hundred forty-two thousand, three hundred forty".