342129664 has 44 divisors (see below), whose sum is σ = 687382600. Its totient is φ = 170201088.

The previous prime is 342129661. The next prime is 342129677. The reversal of 342129664 is 466921243.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342129661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233767 + ... + 235225.

Almost surely, 2^342129664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 342129664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343691300).

342129664 is an abundant number, since it is smaller than the sum of its proper divisors (345252936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

342129664 is a wasteful number, since it uses less digits than its factorization.

342129664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708 (or 1690 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 342129664 is about 18496.7473897440. The cubic root of 342129664 is about 699.4074332134.

The spelling of 342129664 in words is "three hundred forty-two million, one hundred twenty-nine thousand, six hundred sixty-four".