123861407 has 8 divisors (see below), whose sum is σ = 128638800. Its totient is φ = 119117824.

The previous prime is 123861391. The next prime is 123861421. The reversal of 123861407 is 704168321.

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 123861407 - 2⁴ = 123861391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123861427) 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, 857 + ... + 15762.

It is an arithmetic number, because the mean of its divisors is an integer number (16079850).

Almost surely, 2^123861407 is an apocalyptic number.

123861407 is a deficient number, since it is larger than the sum of its proper divisors (4777393).

123861407 is a wasteful number, since it uses less digits than its factorization.

123861407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16905.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 123861407 is about 11129.3039764399. The cubic root of 123861407 is about 498.4772431310.

The spelling of 123861407 in words is "one hundred twenty-three million, eight hundred sixty-one thousand, four hundred seven".