620340342 has 24 divisors (see below), whose sum is σ = 1249331496. Its totient is φ = 205348224.

The previous prime is 620340323. The next prime is 620340389. The reversal of 620340342 is 243043026.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130878 + ... + 135534.

It is an arithmetic number, because the mean of its divisors is an integer number (52055479).

Almost surely, 2^620340342 is an apocalyptic number.

620340342 is an abundant number, since it is smaller than the sum of its proper divisors (628991154).

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

620340342 is a wasteful number, since it uses less digits than its factorization.

620340342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4960 (or 4811 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 620340342 is about 24906.6324901621. The cubic root of 620340342 is about 852.8578968137.

Adding to 620340342 its reverse (243043026), we get a palindrome (863383368).

The spelling of 620340342 in words is "six hundred twenty million, three hundred forty thousand, three hundred forty-two".