1340242881 has 16 divisors (see below), whose sum is σ = 1889275200. Its totient is φ = 842764608.

The previous prime is 1340242829. The next prime is 1340242927. The reversal of 1340242881 is 1882420431.

It is not a de Polignac number, because 1340242881 - 2¹⁰ = 1340241857 is a prime.

It is a super-2 number, since 2×1340242881² = 3592501960142360322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1340242381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38286 + ... + 64391.

It is an arithmetic number, because the mean of its divisors is an integer number (118079700).

Almost surely, 2^1340242881 is an apocalyptic number.

It is an amenable number.

1340242881 is a deficient number, since it is larger than the sum of its proper divisors (549032319).

1340242881 is a wasteful number, since it uses less digits than its factorization.

1340242881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102928.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 1340242881 is about 36609.3277867813. The cubic root of 1340242881 is about 1102.5403768616.

The spelling of 1340242881 in words is "one billion, three hundred forty million, two hundred forty-two thousand, eight hundred eighty-one".