1171122440 has 16 divisors (see below), whose sum is σ = 2635025580. Its totient is φ = 468448960.

The previous prime is 1171122439. The next prime is 1171122461. The reversal of 1171122440 is 442211711.

It can be written as a sum of positive squares in 2 ways, for example, as 1168682596 + 2439844 = 34186^2 + 1562^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14638991 + ... + 14639070.

Almost surely, 2^1171122440 is an apocalyptic number.

1171122440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1171122440 is an abundant number, since it is smaller than the sum of its proper divisors (1463903140).

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

1171122440 is a wasteful number, since it uses less digits than its factorization.

1171122440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29278072 (or 29278068 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1171122440 is about 34221.6662364649. Note that the first 3 decimals coincide. The cubic root of 1171122440 is about 1054.0651002113.

The spelling of 1171122440 in words is "one billion, one hundred seventy-one million, one hundred twenty-two thousand, four hundred forty".