123861402 has 48 divisors (see below), whose sum is σ = 308093760. Its totient is φ = 35228736.

The previous prime is 123861391. The next prime is 123861421. The reversal of 123861402 is 204168321.

123861402 is a `hidden beast` number, since 12 + 38 + 614 + 0 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27249 + ... + 31467.

It is an arithmetic number, because the mean of its divisors is an integer number (6418620).

Almost surely, 2^123861402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123861402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154046880).

123861402 is an abundant number, since it is smaller than the sum of its proper divisors (184232358).

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

123861402 is a wasteful number, since it uses less digits than its factorization.

123861402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4467 (or 4464 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 123861402 is about 11129.3037518077. The cubic root of 123861402 is about 498.4772364235.

The spelling of 123861402 in words is "one hundred twenty-three million, eight hundred sixty-one thousand, four hundred two".