1340457206 has 8 divisors (see below), whose sum is σ = 2193475464. Its totient is φ = 609298720.

The previous prime is 1340457197. The next prime is 1340457211. The reversal of 1340457206 is 6027540431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1340457206² = 3593651042234652872, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 30464915 + ... + 30464958.

It is an arithmetic number, because the mean of its divisors is an integer number (274184433).

Almost surely, 2^1340457206 is an apocalyptic number.

1340457206 is a deficient number, since it is larger than the sum of its proper divisors (853018258).

1340457206 is a wasteful number, since it uses less digits than its factorization.

1340457206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60929886.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 1340457206 is about 36612.2548609069. The cubic root of 1340457206 is about 1102.5991446602.

Adding to 1340457206 its reverse (6027540431), we get a palindrome (7367997637).

The spelling of 1340457206 in words is "one billion, three hundred forty million, four hundred fifty-seven thousand, two hundred six".