123787501 has 2 divisors, whose sum is σ = 123787502. Its totient is φ = 123787500.

The previous prime is 123787471. The next prime is 123787507. The reversal of 123787501 is 105787321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91183401 + 32604100 = 9549^2 + 5710^2 .

It is an emirp because it is prime and its reverse (105787321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123787501 - 2²⁵ = 90233069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123787507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61893750 + 61893751.

It is an arithmetic number, because the mean of its divisors is an integer number (61893751).

Almost surely, 2^123787501 is an apocalyptic number.

It is an amenable number.

123787501 is a deficient number, since it is larger than the sum of its proper divisors (1).

123787501 is an equidigital number, since it uses as much as digits as its factorization.

123787501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 123787501 is about 11125.9831475695. The cubic root of 123787501 is about 498.3780791008.

The spelling of 123787501 in words is "one hundred twenty-three million, seven hundred eighty-seven thousand, five hundred one".