342503720 has 64 divisors (see below), whose sum is σ = 831978000. Its totient is φ = 126148608.

The previous prime is 342503701. The next prime is 342503723. The reversal of 342503720 is 27305243.

It can be written as a sum of positive squares in 8 ways, for example, as 31684 + 342472036 = 178^2 + 18506^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 342503720.

It is not an unprimeable number, because it can be changed into a prime (342503723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368216 + ... + 369144.

Almost surely, 2^342503720 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 342503720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415989000).

342503720 is an abundant number, since it is smaller than the sum of its proper divisors (489474280).

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

342503720 is a wasteful number, since it uses less digits than its factorization.

342503720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662 (or 1658 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 342503720 is about 18506.8560268891. The cubic root of 342503720 is about 699.6622316019.

Adding to 342503720 its reverse (27305243), we get a palindrome (369808963).

The spelling of 342503720 in words is "three hundred forty-two million, five hundred three thousand, seven hundred twenty".