342021142 has 4 divisors (see below), whose sum is σ = 513031716. Its totient is φ = 171010570.

The previous prime is 342021103. The next prime is 342021149. The reversal of 342021142 is 241120243.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342021149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85505284 + ... + 85505287.

It is an arithmetic number, because the mean of its divisors is an integer number (128257929).

Almost surely, 2^342021142 is an apocalyptic number.

342021142 is a deficient number, since it is larger than the sum of its proper divisors (171010574).

342021142 is a wasteful number, since it uses less digits than its factorization.

342021142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171010573.

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

The square root of 342021142 is about 18493.8136142873. The cubic root of 342021142 is about 699.3334757561. Note that the first 3 decimals are identical.

Adding to 342021142 its reverse (241120243), we get a palindrome (583141385).

It can be divided in two parts, 34202 and 1142, that added together give a square (35344 = 188²).

The spelling of 342021142 in words is "three hundred forty-two million, twenty-one thousand, one hundred forty-two".