620942 has 16 divisors (see below), whose sum is σ = 1127520. Its totient is φ = 250368.

The previous prime is 620933. The next prime is 620947. The reversal of 620942 is 249026.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 620942.

It is not an unprimeable number, because it can be changed into a prime (620947) by changing a digit.

620942 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 1067 + ... + 1542.

It is an arithmetic number, because the mean of its divisors is an integer number (70470).

2⁶²⁰⁹⁴² is an apocalyptic number.

620942 is a deficient number, since it is larger than the sum of its proper divisors (506578).

620942 is a wasteful number, since it uses less digits than its factorization.

620942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2635.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 620942 is about 787.9987309634. The cubic root of 620942 is about 85.3133532052.

Adding to 620942 its reverse (249026), we get a palindrome (869968).

The spelling of 620942 in words is "six hundred twenty thousand, nine hundred forty-two".