1340420032 has 56 divisors (see below), whose sum is σ = 3097292256. Its totient is φ = 563616768.

The previous prime is 1340420017. The next prime is 1340420033. The reversal of 1340420032 is 2300240431.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 1340419991 and 1340420009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340420033) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4483 + ... + 51970.

Almost surely, 2^1340420032 is an apocalyptic number.

It is an amenable number.

1340420032 is an abundant number, since it is smaller than the sum of its proper divisors (1756872224).

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

1340420032 is an equidigital number, since it uses as much as digits as its factorization.

1340420032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56525 (or 56515 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1340420032 is about 36611.7471858419. The cubic root of 1340420032 is about 1102.5889520186.

Adding to 1340420032 its reverse (2300240431), we get a palindrome (3640660463).

The spelling of 1340420032 in words is "one billion, three hundred forty million, four hundred twenty thousand, thirty-two".