123146040 has 32 divisors (see below), whose sum is σ = 369438480. Its totient is φ = 32838912.

The previous prime is 123146033. The next prime is 123146041. The reversal of 123146040 is 40641321.

It is a junction number, because it is equal to n+sod(n) for n = 123145998 and 123146016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123146041) 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, 512989 + ... + 513228.

Almost surely, 2^123146040 is an apocalyptic number.

123146040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123146040 is an abundant number, since it is smaller than the sum of its proper divisors (246292440).

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

123146040 is a wasteful number, since it uses less digits than its factorization.

123146040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026231 (or 1026227 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 123146040 is about 11097.1185449197. The cubic root of 123146040 is about 497.5157305868.

Adding to 123146040 its reverse (40641321), we get a palindrome (163787361).

The spelling of 123146040 in words is "one hundred twenty-three million, one hundred forty-six thousand, forty".