124251315049 has 3 divisors (see below), whose sum is σ = 124251667543. Its totient is φ = 124250962556.

The previous prime is 124251315037. The next prime is 124251315053. The reversal of 124251315049 is 940513152421.

The square root of 124251315049 is 352493.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 22956795225 + 101294519824 = 151515^2 + 318268^2 .

It is not a de Polignac number, because 124251315049 - 2⁵ = 124251315017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124251314999 and 124251315017.

It is not an unprimeable number, because it can be changed into a prime (124251312049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 176247 + ... + 528739.

Almost surely, 2^124251315049 is an apocalyptic number.

124251315049 is the 352493-rd square number.

124251315049 is the 176247-th centered octagonal number.

It is an amenable number.

124251315049 is a deficient number, since it is larger than the sum of its proper divisors (352494).

124251315049 is an frugal number, since it uses more digits than its factorization.

124251315049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704986 (or 352493 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 124251315049 in words is "one hundred twenty-four billion, two hundred fifty-one million, three hundred fifteen thousand, forty-nine".