123861434 has 16 divisors (see below), whose sum is σ = 188310528. Its totient is φ = 61095552.

The previous prime is 123861427. The next prime is 123861443. The reversal of 123861434 is 434168321.

It is a self number, because there is not a number n which added to its sum of digits gives 123861434.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 73469 + ... + 75135.

It is an arithmetic number, because the mean of its divisors is an integer number (11769408).

Almost surely, 2^123861434 is an apocalyptic number.

123861434 is a deficient number, since it is larger than the sum of its proper divisors (64449094).

123861434 is a wasteful number, since it uses less digits than its factorization.

123861434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149.

The product of its digits is 13824, while the sum is 32.

The square root of 123861434 is about 11129.3051894537. The cubic root of 123861434 is about 498.4772793513.

The spelling of 123861434 in words is "one hundred twenty-three million, eight hundred sixty-one thousand, four hundred thirty-four".