342689720 has 16 divisors (see below), whose sum is σ = 771051960. Its totient is φ = 137075872.

The previous prime is 342689701. The next prime is 342689729. The reversal of 342689720 is 27986243.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342689729) 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, 4283582 + ... + 4283661.

Almost surely, 2^342689720 is an apocalyptic number.

It is an amenable number.

342689720 is an abundant number, since it is smaller than the sum of its proper divisors (428362240).

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

342689720 is a wasteful number, since it uses less digits than its factorization.

342689720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8567254 (or 8567250 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 342689720 is about 18511.8805095539. The cubic root of 342689720 is about 699.7888614915.

The spelling of 342689720 in words is "three hundred forty-two million, six hundred eighty-nine thousand, seven hundred twenty".