1340432040 has 64 divisors (see below), whose sum is σ = 4032043200. Its totient is φ = 356493312.

The previous prime is 1340432021. The next prime is 1340432053. The reversal of 1340432040 is 402340431.

It is a junction number, because it is equal to n+sod(n) for n = 1340431998 and 1340432016.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30744 + ... + 60216.

It is an arithmetic number, because the mean of its divisors is an integer number (63000675).

Almost surely, 2^1340432040 is an apocalyptic number.

1340432040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340432040 is an abundant number, since it is smaller than the sum of its proper divisors (2691611160).

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

1340432040 is a wasteful number, since it uses less digits than its factorization.

1340432040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29866 (or 29862 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1340432040 is about 36611.9111765556. The cubic root of 1340432040 is about 1102.5922444813.

Adding to 1340432040 its reverse (402340431), we get a palindrome (1742772471).

The spelling of 1340432040 in words is "one billion, three hundred forty million, four hundred thirty-two thousand, forty".