1340423210 has 128 divisors (see below), whose sum is σ = 3135283200. Its totient is φ = 401829120.

The previous prime is 1340423197. The next prime is 1340423261. The reversal of 1340423210 is 123240431.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 886355 + ... + 887865.

It is an arithmetic number, because the mean of its divisors is an integer number (24494400).

Almost surely, 2^1340423210 is an apocalyptic number.

1340423210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1340423210 is an abundant number, since it is smaller than the sum of its proper divisors (1794859990).

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

1340423210 is a wasteful number, since it uses less digits than its factorization.

1340423210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1340423210 is about 36611.7905871865. The cubic root of 1340423210 is about 1102.5898233935.

Adding to 1340423210 its reverse (123240431), we get a palindrome (1463663641).

The spelling of 1340423210 in words is "one billion, three hundred forty million, four hundred twenty-three thousand, two hundred ten".