340421535 has 20 divisors (see below), whose sum is σ = 610237848. Its totient is φ = 181557936.

The previous prime is 340421531. The next prime is 340421567. The reversal of 340421535 is 535124043.

It is not a de Polignac number, because 340421535 - 2² = 340421531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 340421499 and 340421508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340421531) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 419869 + ... + 420678.

Almost surely, 2^340421535 is an apocalyptic number.

340421535 is a deficient number, since it is larger than the sum of its proper divisors (269816313).

340421535 is an equidigital number, since it uses as much as digits as its factorization.

340421535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840564 (or 840555 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 340421535 is about 18450.5158464472. The cubic root of 340421535 is about 698.2415284155.

Adding to 340421535 its reverse (535124043), we get a palindrome (875545578).

It can be divided in two parts, 340 and 421535, that added together give a cube (421875 = 75³).

The spelling of 340421535 in words is "three hundred forty million, four hundred twenty-one thousand, five hundred thirty-five".