1180421440 has 56 divisors (see below), whose sum is σ = 3066422112. Its totient is φ = 429242880.

The previous prime is 1180421413. The next prime is 1180421443. The reversal of 1180421440 is 441240811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180421443) 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, 164154 + ... + 171193.

Almost surely, 2^1180421440 is an apocalyptic number.

1180421440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1180421440 is an abundant number, since it is smaller than the sum of its proper divisors (1886000672).

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

1180421440 is a wasteful number, since it uses less digits than its factorization.

1180421440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335375 (or 335365 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 1180421440 is about 34357.2618233759. The cubic root of 1180421440 is about 1056.8475939111.

The spelling of 1180421440 in words is "one billion, one hundred eighty million, four hundred twenty-one thousand, four hundred forty".