1340305454 has 16 divisors (see below), whose sum is σ = 2036655600. Its totient is φ = 661457664.

The previous prime is 1340305363. The next prime is 1340305493. The reversal of 1340305454 is 4545030431.

It is a super-2 number, since 2×1340305454² = 3592837420044292232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64412 + ... + 82640.

It is an arithmetic number, because the mean of its divisors is an integer number (127290975).

Almost surely, 2^1340305454 is an apocalyptic number.

1340305454 is a deficient number, since it is larger than the sum of its proper divisors (696350146).

1340305454 is a wasteful number, since it uses less digits than its factorization.

1340305454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18707.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 1340305454 is about 36610.1823814086. The cubic root of 1340305454 is about 1102.5575349917.

Adding to 1340305454 its reverse (4545030431), we get a palindrome (5885335885).

The spelling of 1340305454 in words is "one billion, three hundred forty million, three hundred five thousand, four hundred fifty-four".