1121230440 has 96 divisors (see below), whose sum is σ = 3975285600. Its totient is φ = 271812480.

The previous prime is 1121230421. The next prime is 1121230457. The reversal of 1121230440 is 440321211.

1121230440 is a `hidden beast` number, since 11 + 212 + 3 + 0 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137610 + ... + 145529.

It is an arithmetic number, because the mean of its divisors is an integer number (41409225).

Almost surely, 2^1121230440 is an apocalyptic number.

1121230440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121230440 is an abundant number, since it is smaller than the sum of its proper divisors (2854055160).

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

1121230440 is a wasteful number, since it uses less digits than its factorization.

1121230440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283167 (or 283160 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1121230440 is about 33484.7792287780. The cubic root of 1121230440 is about 1038.8789819288.

Adding to 1121230440 its reverse (440321211), we get a palindrome (1561551651).

The spelling of 1121230440 in words is "one billion, one hundred twenty-one million, two hundred thirty thousand, four hundred forty".