124869551 has 2 divisors, whose sum is σ = 124869552. Its totient is φ = 124869550.

The previous prime is 124869517. The next prime is 124869611. The reversal of 124869551 is 155968421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 124869551 - 2¹⁴ = 124853167 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 124869499 and 124869508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124869851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62434775 + 62434776.

It is an arithmetic number, because the mean of its divisors is an integer number (62434776).

Almost surely, 2^124869551 is an apocalyptic number.

124869551 is a deficient number, since it is larger than the sum of its proper divisors (1).

124869551 is an equidigital number, since it uses as much as digits as its factorization.

124869551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 41.

The square root of 124869551 is about 11174.5045080308. The cubic root of 124869551 is about 499.8260074602.

The spelling of 124869551 in words is "one hundred twenty-four million, eight hundred sixty-nine thousand, five hundred fifty-one".