342207840 has 192 divisors, whose sum is σ = 1171267776. Its totient is φ = 83484672.

The previous prime is 342207829. The next prime is 342207881. The reversal of 342207840 is 48702243.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 342207798 and 342207807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1079362 + ... + 1079678.

It is an arithmetic number, because the mean of its divisors is an integer number (6100353).

Almost surely, 2^342207840 is an apocalyptic number.

342207840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 342207840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585633888).

342207840 is an abundant number, since it is smaller than the sum of its proper divisors (829059936).

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

342207840 is a wasteful number, since it uses less digits than its factorization.

342207840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 342207840 is about 18498.8605054474. The cubic root of 342207840 is about 699.4607002612.

The spelling of 342207840 in words is "three hundred forty-two million, two hundred seven thousand, eight hundred forty".