621792942 has 8 divisors (see below), whose sum is σ = 1243585896. Its totient is φ = 207264312.

The previous prime is 621792931. The next prime is 621792949. The reversal of 621792942 is 249297126.

It is a sphenic number, since it is the product of 3 distinct primes.

621792942 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 621792894 and 621792903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621792949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51816073 + ... + 51816084.

It is an arithmetic number, because the mean of its divisors is an integer number (155448237).

Almost surely, 2^621792942 is an apocalyptic number.

621792942 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

621792942 is a wasteful number, since it uses less digits than its factorization.

621792942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103632162.

The product of its digits is 108864, while the sum is 42.

The square root of 621792942 is about 24935.7763464465. The cubic root of 621792942 is about 853.5230669755.

The spelling of 621792942 in words is "six hundred twenty-one million, seven hundred ninety-two thousand, nine hundred forty-two".