1340551129 has 8 divisors (see below), whose sum is σ = 1420602120. Its totient is φ = 1262755200.

The previous prime is 1340551127. The next prime is 1340551139. The reversal of 1340551129 is 9211550431.

It can be written as a sum of positive squares in 4 ways, for example, as 58553104 + 1281998025 = 7652^2 + 35805^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1340551129 - 2¹ = 1340551127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1340551129.

It is not an unprimeable number, because it can be changed into a prime (1340551127) 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, 562542 + ... + 564919.

It is an arithmetic number, because the mean of its divisors is an integer number (177575265).

Almost surely, 2^1340551129 is an apocalyptic number.

It is an amenable number.

1340551129 is a deficient number, since it is larger than the sum of its proper divisors (80050991).

1340551129 is a wasteful number, since it uses less digits than its factorization.

1340551129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127531.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1340551129 is about 36613.5375100522. The cubic root of 1340551129 is about 1102.6248963217.

The spelling of 1340551129 in words is "one billion, three hundred forty million, five hundred fifty-one thousand, one hundred twenty-nine".