1340242927 has 2 divisors, whose sum is σ = 1340242928. Its totient is φ = 1340242926.

The previous prime is 1340242829. The next prime is 1340243011. The reversal of 1340242927 is 7292420431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1340242927 - 2²⁷ = 1206025199 is a prime.

It is a super-2 number, since 2×1340242927² = 3592502206747054658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1340242892 and 1340242901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340942927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670121463 + 670121464.

It is an arithmetic number, because the mean of its divisors is an integer number (670121464).

Almost surely, 2^1340242927 is an apocalyptic number.

1340242927 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340242927 is an equidigital number, since it uses as much as digits as its factorization.

1340242927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 1340242927 is about 36609.3284150365. The cubic root of 1340242927 is about 1102.5403894754.

The spelling of 1340242927 in words is "one billion, three hundred forty million, two hundred forty-two thousand, nine hundred twenty-seven".