342136421 has 4 divisors (see below), whose sum is σ = 373239744. Its totient is φ = 311033100.

The previous prime is 342136411. The next prime is 342136463. The reversal of 342136421 is 124631243.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 342136421 - 2⁶ = 342136357 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 (342136411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15551645 + ... + 15551666.

It is an arithmetic number, because the mean of its divisors is an integer number (93309936).

Almost surely, 2^342136421 is an apocalyptic number.

It is an amenable number.

342136421 is a deficient number, since it is larger than the sum of its proper divisors (31103323).

342136421 is a wasteful number, since it uses less digits than its factorization.

342136421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31103322.

The product of its digits is 3456, while the sum is 26.

The square root of 342136421 is about 18496.9300425773. The cubic root of 342136421 is about 699.4120375739.

Adding to 342136421 its reverse (124631243), we get a palindrome (466767664).

The spelling of 342136421 in words is "three hundred forty-two million, one hundred thirty-six thousand, four hundred twenty-one".