420830783857 has 8 divisors (see below), whose sum is σ = 467750168640. Its totient is φ = 375355072560.

The previous prime is 420830783827. The next prime is 420830783897. The reversal of 420830783857 is 758387038024.

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

It is a cyclic number.

It is not a de Polignac number, because 420830783857 - 2⁷ = 420830783729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420830783798 and 420830783807.

It is not an unprimeable number, because it can be changed into a prime (420830783827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360917757 + ... + 360918922.

It is an arithmetic number, because the mean of its divisors is an integer number (58468771080).

Almost surely, 2^420830783857 is an apocalyptic number.

It is an amenable number.

420830783857 is a deficient number, since it is larger than the sum of its proper divisors (46919384783).

420830783857 is a wasteful number, since it uses less digits than its factorization.

420830783857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721836743.

The product of its (nonzero) digits is 9031680, while the sum is 55.

The spelling of 420830783857 in words is "four hundred twenty billion, eight hundred thirty million, seven hundred eighty-three thousand, eight hundred fifty-seven".