342127621 has 12 divisors (see below), whose sum is σ = 376511296. Its totient is φ = 310650120.

The previous prime is 342127619. The next prime is 342127627. The reversal of 342127621 is 126721243.

It is not a de Polignac number, because 342127621 - 2¹ = 342127619 is a prime.

It is a super-2 number, since 2×342127621² = 234102618102239282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 342127621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342127627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171190 + ... + 173176.

Almost surely, 2^342127621 is an apocalyptic number.

It is an amenable number.

342127621 is a deficient number, since it is larger than the sum of its proper divisors (34383675).

342127621 is a wasteful number, since it uses less digits than its factorization.

342127621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432 (or 3421 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 342127621 is about 18496.6921637357. The cubic root of 342127621 is about 699.4060410588.

Adding to 342127621 its reverse (126721243), we get a palindrome (468848864).

The spelling of 342127621 in words is "three hundred forty-two million, one hundred twenty-seven thousand, six hundred twenty-one".