1340042432 has 28 divisors (see below), whose sum is σ = 2671776216. Its totient is φ = 666839040.

The previous prime is 1340042423. The next prime is 1340042441. The reversal of 1340042432 is 2342400431.

It is an interprime number because it is at equal distance from previous prime (1340042423) and next prime (1340042441).

It is a junction number, because it is equal to n+sod(n) for n = 1340042398 and 1340042407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36113 + ... + 63120.

Almost surely, 2^1340042432 is an apocalyptic number.

It is an amenable number.

1340042432 is a deficient number, since it is larger than the sum of its proper divisors (1331733784).

1340042432 is an equidigital number, since it uses as much as digits as its factorization.

1340042432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99456 (or 99446 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1340042432 is about 36606.5900078114. The cubic root of 1340042432 is about 1102.4854081844.

Adding to 1340042432 its reverse (2342400431), we get a palindrome (3682442863).

The spelling of 1340042432 in words is "one billion, three hundred forty million, forty-two thousand, four hundred thirty-two".