124767421 has 4 divisors (see below), whose sum is σ = 126002844. Its totient is φ = 123532000.

The previous prime is 124767371. The next prime is 124767449.

It is a happy number.

124767421 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54022500 + 70744921 = 7350^2 + 8411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124767421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124767451) 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 in 3 ways as a sum of consecutive naturals, for example, 617560 + ... + 617761.

It is an arithmetic number, because the mean of its divisors is an integer number (31500711).

Almost surely, 2^124767421 is an apocalyptic number.

It is an amenable number.

124767421 is a deficient number, since it is larger than the sum of its proper divisors (1235423).

124767421 is a wasteful number, since it uses less digits than its factorization.

124767421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235422.

The product of its digits is 18816, while the sum is 34.

The square root of 124767421 is about 11169.9337956856. The cubic root of 124767421 is about 499.6897021370.

The spelling of 124767421 in words is "one hundred twenty-four million, seven hundred sixty-seven thousand, four hundred twenty-one".