1340040534 has 48 divisors (see below), whose sum is σ = 3218236416. Its totient is φ = 370515600.

The previous prime is 1340040491. The next prime is 1340040553. The reversal of 1340040534 is 4350400431.

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 23 ways as a sum of consecutive naturals, for example, 64402 + ... + 82629.

It is an arithmetic number, because the mean of its divisors is an integer number (67046592).

Almost surely, 2^1340040534 is an apocalyptic number.

1340040534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1340040534 is an abundant number, since it is smaller than the sum of its proper divisors (1878195882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1340040534 is a wasteful number, since it uses less digits than its factorization.

1340040534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147081 (or 147074 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 1340040534 is about 36606.5640835083. The cubic root of 1340040534 is about 1102.4848876739.

Adding to 1340040534 its reverse (4350400431), we get a palindrome (5690440965).

The spelling of 1340040534 in words is "one billion, three hundred forty million, forty thousand, five hundred thirty-four".