340442530 has 8 divisors (see below), whose sum is σ = 612796572. Its totient is φ = 136177008.

The previous prime is 340442519. The next prime is 340442537. The reversal of 340442530 is 35244043.

It can be written as a sum of positive squares in 2 ways, for example, as 339185889 + 1256641 = 18417^2 + 1121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×340442530² = 231802232465601800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 340442495 and 340442504.

It is not an unprimeable number, because it can be changed into a prime (340442537) 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, 17022117 + ... + 17022136.

Almost surely, 2^340442530 is an apocalyptic number.

340442530 is a deficient number, since it is larger than the sum of its proper divisors (272354042).

340442530 is a wasteful number, since it uses less digits than its factorization.

340442530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34044260.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 340442530 is about 18451.0847919574. The cubic root of 340442530 is about 698.2558824619.

Adding to 340442530 its reverse (35244043), we get a palindrome (375686573).

The spelling of 340442530 in words is "three hundred forty million, four hundred forty-two thousand, five hundred thirty".