342203421 has 16 divisors (see below), whose sum is σ = 552127104. Its totient is φ = 184041984.

The previous prime is 342203401. The next prime is 342203423. The reversal of 342203421 is 124302243.

It is not a de Polignac number, because 342203421 - 2⁹ = 342202909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342203423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478920 + ... + 479633.

It is an arithmetic number, because the mean of its divisors is an integer number (34507944).

Almost surely, 2^342203421 is an apocalyptic number.

It is an amenable number.

342203421 is a deficient number, since it is larger than the sum of its proper divisors (209923683).

342203421 is a wasteful number, since it uses less digits than its factorization.

342203421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958580.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 342203421 is about 18498.7410652725. The cubic root of 342203421 is about 699.4576894885.

Adding to 342203421 its reverse (124302243), we get a palindrome (466505664).

The spelling of 342203421 in words is "three hundred forty-two million, two hundred three thousand, four hundred twenty-one".