123145296 has 40 divisors (see below), whose sum is σ = 320646144. Its totient is φ = 40723200.

The previous prime is 123145273. The next prime is 123145301. The reversal of 123145296 is 692541321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4005 + ... + 16196.

Almost surely, 2^123145296 is an apocalyptic number.

123145296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123145296 is an abundant number, since it is smaller than the sum of its proper divisors (197500848).

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

123145296 is a wasteful number, since it uses less digits than its factorization.

123145296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20339 (or 20333 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 123145296 is about 11097.0850226535. The cubic root of 123145296 is about 497.5147286533.

The spelling of 123145296 in words is "one hundred twenty-three million, one hundred forty-five thousand, two hundred ninety-six".