340461421 has 4 divisors (see below), whose sum is σ = 352201500. Its totient is φ = 328721344.

The previous prime is 340461419. The next prime is 340461449. The reversal of 340461421 is 124164043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124164043 = 3371 ⋅36833.

It can be written as a sum of positive squares in 2 ways, for example, as 124077321 + 216384100 = 11139^2 + 14710^2 .

It is a cyclic number.

It is not a de Polignac number, because 340461421 - 2¹ = 340461419 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 (340461491) 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, 5869996 + ... + 5870053.

It is an arithmetic number, because the mean of its divisors is an integer number (88050375).

Almost surely, 2^340461421 is an apocalyptic number.

It is an amenable number.

340461421 is a deficient number, since it is larger than the sum of its proper divisors (11740079).

340461421 is a wasteful number, since it uses less digits than its factorization.

340461421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11740078.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 340461421 is about 18451.5967059764. The cubic root of 340461421 is about 698.2687975226.

The spelling of 340461421 in words is "three hundred forty million, four hundred sixty-one thousand, four hundred twenty-one".