123945949782 has 48 divisors (see below), whose sum is σ = 270709490688. Its totient is φ = 40984334640.

The previous prime is 123945949759. The next prime is 123945949819. The reversal of 123945949782 is 287949549321.

123945949782 is a `hidden beast` number, since 1 + 2 + 3 + 94 + 59 + 497 + 8 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1081407 + ... + 1190517.

It is an arithmetic number, because the mean of its divisors is an integer number (5639781056).

Almost surely, 2^123945949782 is an apocalyptic number.

123945949782 is an abundant number, since it is smaller than the sum of its proper divisors (146763540906).

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

123945949782 is a wasteful number, since it uses less digits than its factorization.

123945949782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109625 (or 109622 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 63.

The spelling of 123945949782 in words is "one hundred twenty-three billion, nine hundred forty-five million, nine hundred forty-nine thousand, seven hundred eighty-two".