123402040146 has 96 divisors (see below), whose sum is σ = 352954412928. Its totient is φ = 30167032320.

The previous prime is 123402040117. The next prime is 123402040187. The reversal of 123402040146 is 641040204321.

It is a happy number.

123402040146 is a `hidden beast` number, since 1 + 234 + 0 + 20 + 401 + 4 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2595105 + ... + 2642228.

It is an arithmetic number, because the mean of its divisors is an integer number (3676608468).

Almost surely, 2^123402040146 is an apocalyptic number.

123402040146 is an abundant number, since it is smaller than the sum of its proper divisors (229552372782).

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

123402040146 is a wasteful number, since it uses less digits than its factorization.

123402040146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5237376 (or 5237373 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 123402040146 its reverse (641040204321), we get a palindrome (764442244467).

The spelling of 123402040146 in words is "one hundred twenty-three billion, four hundred two million, forty thousand, one hundred forty-six".