340421432 has 24 divisors (see below), whose sum is σ = 691169040. Its totient is φ = 157116960.

The previous prime is 340421407. The next prime is 340421437. The reversal of 340421432 is 234124043.

It is a junction number, because it is equal to n+sod(n) for n = 340421398 and 340421407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340421437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124544 + ... + 127247.

It is an arithmetic number, because the mean of its divisors is an integer number (28798710).

Almost surely, 2^340421432 is an apocalyptic number.

It is an amenable number.

340421432 is an abundant number, since it is smaller than the sum of its proper divisors (350747608).

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

340421432 is a wasteful number, since it uses less digits than its factorization.

340421432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251823 (or 251806 counting only the distinct ones).

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

The square root of 340421432 is about 18450.5130551971. The cubic root of 340421432 is about 698.2414579941.

Adding to 340421432 its reverse (234124043), we get a palindrome (574545475).

The spelling of 340421432 in words is "three hundred forty million, four hundred twenty-one thousand, four hundred thirty-two".