123501047 has 2 divisors, whose sum is σ = 123501048. Its totient is φ = 123501046.

The previous prime is 123501013. The next prime is 123501071. The reversal of 123501047 is 740105321.

It is a strong prime.

It is an emirp because it is prime and its reverse (740105321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123501047 - 2¹² = 123496951 is a prime.

It is a super-2 number, since 2×123501047² = 30505017220192418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123501247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61750523 + 61750524.

It is an arithmetic number, because the mean of its divisors is an integer number (61750524).

Almost surely, 2^123501047 is an apocalyptic number.

123501047 is a deficient number, since it is larger than the sum of its proper divisors (1).

123501047 is an equidigital number, since it uses as much as digits as its factorization.

123501047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 123501047 is about 11113.1024921036. The cubic root of 123501047 is about 497.9933535131.

Adding to 123501047 its reverse (740105321), we get a palindrome (863606368).

The spelling of 123501047 in words is "one hundred twenty-three million, five hundred one thousand, forty-seven".