1340342234 has 32 divisors (see below), whose sum is σ = 2567763072. Its totient is φ = 509472000.

The previous prime is 1340342233. The next prime is 1340342291. The reversal of 1340342234 is 4322430431.

It is a super-2 number, since 2×1340342234² = 3593034608488221512, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1340342231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99827 + ... + 112454.

It is an arithmetic number, because the mean of its divisors is an integer number (80242596).

Almost surely, 2^1340342234 is an apocalyptic number.

1340342234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1340342234 is a deficient number, since it is larger than the sum of its proper divisors (1227420838).

1340342234 is a wasteful number, since it uses less digits than its factorization.

1340342234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212342.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 1340342234 is about 36610.6846972301. The cubic root of 1340342234 is about 1102.5676201792.

Adding to 1340342234 its reverse (4322430431), we get a palindrome (5662772665).

The spelling of 1340342234 in words is "one billion, three hundred forty million, three hundred forty-two thousand, two hundred thirty-four".