123507849 has 8 divisors (see below), whose sum is σ = 164906560. Its totient is φ = 82223856.

The previous prime is 123507823. The next prime is 123507863. The reversal of 123507849 is 948705321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123507849 - 2⁹ = 123507337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123507149) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 26134 + ... + 30495.

It is an arithmetic number, because the mean of its divisors is an integer number (20613320).

Almost surely, 2^123507849 is an apocalyptic number.

It is an amenable number.

123507849 is a deficient number, since it is larger than the sum of its proper divisors (41398711).

123507849 is an equidigital number, since it uses as much as digits as its factorization.

123507849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57359.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 123507849 is about 11113.4085230410. The cubic root of 123507849 is about 498.0024959150.

The spelling of 123507849 in words is "one hundred twenty-three million, five hundred seven thousand, eight hundred forty-nine".