342039478 has 12 divisors (see below), whose sum is σ = 559842948. Its totient is φ = 155433060.

The previous prime is 342039469. The next prime is 342039479. The reversal of 342039478 is 874930243.

It is a self number, because there is not a number n which added to its sum of digits gives 342039478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342039479) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84775 + ... + 88717.

It is an arithmetic number, because the mean of its divisors is an integer number (46653579).

Almost surely, 2^342039478 is an apocalyptic number.

342039478 is a deficient number, since it is larger than the sum of its proper divisors (217803470).

342039478 is an frugal number, since it uses more digits than its factorization.

342039478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7899 (or 3956 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 342039478 is about 18494.3093409838. The cubic root of 342039478 is about 699.3459727901.

It can be divided in two parts, 34203 and 9478, that added together give a square (43681 = 209²).

The spelling of 342039478 in words is "three hundred forty-two million, thirty-nine thousand, four hundred seventy-eight".