123787201 has 2 divisors, whose sum is σ = 123787202. Its totient is φ = 123787200.

The previous prime is 123787199. The next prime is 123787207. The reversal of 123787201 is 102787321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76108176 + 47679025 = 8724^2 + 6905^2 .

It is a cyclic number.

It is not a de Polignac number, because 123787201 - 2¹ = 123787199 is a prime.

It is a super-2 number, since 2×123787201² = 30646542262828802, which contains 22 as substring.

Together with 123787199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (123787207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61893600 + 61893601.

It is an arithmetic number, because the mean of its divisors is an integer number (61893601).

Almost surely, 2^123787201 is an apocalyptic number.

It is an amenable number.

123787201 is a deficient number, since it is larger than the sum of its proper divisors (1).

123787201 is an equidigital number, since it uses as much as digits as its factorization.

123787201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 123787201 is about 11125.9696656067. The cubic root of 123787201 is about 498.3776764927.

The spelling of 123787201 in words is "one hundred twenty-three million, seven hundred eighty-seven thousand, two hundred one".