1340001432 has 432 divisors, whose sum is σ = 4813328520. Its totient is φ = 335301120.

The previous prime is 1340001427. The next prime is 1340001433. The reversal of 1340001432 is 2341000431.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340001433) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 18356148 + ... + 18356220.

Almost surely, 2^1340001432 is an apocalyptic number.

1340001432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340001432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2406664260).

1340001432 is an abundant number, since it is smaller than the sum of its proper divisors (3473327088).

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

1340001432 is a wasteful number, since it uses less digits than its factorization.

1340001432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1340001432 is about 36606.0299950705. The cubic root of 1340001432 is about 1102.4741641716.

Adding to 1340001432 its reverse (2341000431), we get a palindrome (3681001863).

The spelling of 1340001432 in words is "one billion, three hundred forty million, one thousand, four hundred thirty-two".