124737421 has 2 divisors, whose sum is σ = 124737422. Its totient is φ = 124737420.

The previous prime is 124737419. The next prime is 124737443.

124737421 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102515625 + 22221796 = 10125^2 + 4714^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 124737421 - 2¹ = 124737419 is a prime.

Together with 124737419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124737401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62368710 + 62368711.

It is an arithmetic number, because the mean of its divisors is an integer number (62368711).

Almost surely, 2^124737421 is an apocalyptic number.

It is an amenable number.

124737421 is a deficient number, since it is larger than the sum of its proper divisors (1).

124737421 is an equidigital number, since it uses as much as digits as its factorization.

124737421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 31.

The square root of 124737421 is about 11168.5908242714. The cubic root of 124737421 is about 499.6496492327.

The spelling of 124737421 in words is "one hundred twenty-four million, seven hundred thirty-seven thousand, four hundred twenty-one".