342012421 has 12 divisors (see below), whose sum is σ = 353167500. Its totient is φ = 331119360.

The previous prime is 342012413. The next prime is 342012449. The reversal of 342012421 is 124210243.

It can be written as a sum of positive squares in 2 ways, for example, as 61449921 + 280562500 = 7839^2 + 16750^2 .

It is not a de Polignac number, because 342012421 - 2³ = 342012413 is a prime.

It is a super-2 number, since 2×342012421² = 233944992236562482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342012481) 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, 273205 + ... + 274453.

It is an arithmetic number, because the mean of its divisors is an integer number (29430625).

Almost surely, 2^342012421 is an apocalyptic number.

It is an amenable number.

342012421 is a deficient number, since it is larger than the sum of its proper divisors (11155079).

342012421 is an equidigital number, since it uses as much as digits as its factorization.

342012421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444 (or 1377 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 342012421 is about 18493.5778312364. The cubic root of 342012421 is about 699.3275317385.

Adding to 342012421 its reverse (124210243), we get a palindrome (466222664).

The spelling of 342012421 in words is "three hundred forty-two million, twelve thousand, four hundred twenty-one".