340003332421 has 4 divisors (see below), whose sum is σ = 340006052844. Its totient is φ = 340000612000.

The previous prime is 340003332419. The next prime is 340003332433. The reversal of 340003332421 is 124233300043.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117039936321 + 222963396100 = 342111^2 + 472190^2 .

It is a cyclic number.

It is not a de Polignac number, because 340003332421 - 2¹ = 340003332419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340003332821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1163230 + ... + 1425871.

It is an arithmetic number, because the mean of its divisors is an integer number (85001513211).

Almost surely, 2^340003332421 is an apocalyptic number.

It is an amenable number.

340003332421 is a deficient number, since it is larger than the sum of its proper divisors (2720423).

340003332421 is a wasteful number, since it uses less digits than its factorization.

340003332421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2720422.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 340003332421 its reverse (124233300043), we get a palindrome (464236632464).

The spelling of 340003332421 in words is "three hundred forty billion, three million, three hundred thirty-two thousand, four hundred twenty-one".