1340841261 has 8 divisors (see below), whose sum is σ = 1836107104. Its totient is φ = 869734800.

The previous prime is 1340841197. The next prime is 1340841263. The reversal of 1340841261 is 1621480431.

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

It is not a de Polignac number, because 1340841261 - 2⁶ = 1340841197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340841263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6039715 + ... + 6039936.

It is an arithmetic number, because the mean of its divisors is an integer number (229513388).

Almost surely, 2^1340841261 is an apocalyptic number.

It is an amenable number.

1340841261 is a deficient number, since it is larger than the sum of its proper divisors (495265843).

1340841261 is a wasteful number, since it uses less digits than its factorization.

1340841261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12079691.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 1340841261 is about 36617.4993821260. The cubic root of 1340841261 is about 1102.7044366649.

The spelling of 1340841261 in words is "one billion, three hundred forty million, eight hundred forty-one thousand, two hundred sixty-one".