123802545 has 16 divisors (see below), whose sum is σ = 198297792. Its totient is φ = 65956800.

The previous prime is 123802529. The next prime is 123802573. The reversal of 123802545 is 545208321.

It is not a de Polignac number, because 123802545 - 2⁴ = 123802529 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11839 + ... + 19691.

It is an arithmetic number, because the mean of its divisors is an integer number (12393612).

Almost surely, 2^123802545 is an apocalyptic number.

123802545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123802545 is a deficient number, since it is larger than the sum of its proper divisors (74495247).

123802545 is a wasteful number, since it uses less digits than its factorization.

123802545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8912.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 123802545 is about 11126.6592021145. The cubic root of 123802545 is about 498.3982677198.

The spelling of 123802545 in words is "one hundred twenty-three million, eight hundred two thousand, five hundred forty-five".