123247487 has 4 divisors (see below), whose sum is σ = 134451816. Its totient is φ = 112043160.

The previous prime is 123247469. The next prime is 123247507. The reversal of 123247487 is 784742321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123247487 - 2¹⁴ = 123231103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123247487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123247427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5602148 + ... + 5602169.

It is an arithmetic number, because the mean of its divisors is an integer number (33612954).

Almost surely, 2^123247487 is an apocalyptic number.

123247487 is a deficient number, since it is larger than the sum of its proper divisors (11204329).

123247487 is a wasteful number, since it uses less digits than its factorization.

123247487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11204328.

The product of its digits is 75264, while the sum is 38.

The square root of 123247487 is about 11101.6884751825. The cubic root of 123247487 is about 497.6523099558.

The spelling of 123247487 in words is "one hundred twenty-three million, two hundred forty-seven thousand, four hundred eighty-seven".