124400071 has 2 divisors, whose sum is σ = 124400072. Its totient is φ = 124400070.

The previous prime is 124400069. The next prime is 124400093. The reversal of 124400071 is 170004421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 124400071 - 2¹ = 124400069 is a prime.

Together with 124400069, 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 (124400021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62200035 + 62200036.

It is an arithmetic number, because the mean of its divisors is an integer number (62200036).

Almost surely, 2^124400071 is an apocalyptic number.

124400071 is a deficient number, since it is larger than the sum of its proper divisors (1).

124400071 is an equidigital number, since it uses as much as digits as its factorization.

124400071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 124400071 is about 11153.4779777431. The cubic root of 124400071 is about 499.1988115465.

Adding to 124400071 its reverse (170004421), we get a palindrome (294404492).

The spelling of 124400071 in words is "one hundred twenty-four million, four hundred thousand, seventy-one".