124211399 has 4 divisors (see below), whose sum is σ = 133766136. Its totient is φ = 114656664.

The previous prime is 124211393. The next prime is 124211413. The reversal of 124211399 is 993112421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993112421 = 7 ⋅141873203.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124211399 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 (124211393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4777349 + ... + 4777374.

It is an arithmetic number, because the mean of its divisors is an integer number (33441534).

Almost surely, 2^124211399 is an apocalyptic number.

124211399 is a deficient number, since it is larger than the sum of its proper divisors (9554737).

124211399 is an equidigital number, since it uses as much as digits as its factorization.

124211399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9554736.

The product of its digits is 3888, while the sum is 32.

The square root of 124211399 is about 11145.0167788120. The cubic root of 124211399 is about 498.9463130474.

The spelling of 124211399 in words is "one hundred twenty-four million, two hundred eleven thousand, three hundred ninety-nine".