124343156421 has 48 divisors (see below), whose sum is σ = 203462962560. Its totient is φ = 72483788160.

The previous prime is 124343156303. The next prime is 124343156429. The reversal of 124343156421 is 124651343421.

124343156421 is a `hidden beast` number, since 1 + 2 + 4 + 3 + 4 + 3 + 1 + 5 + 642 + 1 = 666.

It is not a de Polignac number, because 124343156421 - 2¹⁹ = 124342632133 is a prime.

It is a super-2 number, since 2×124343156421² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124343156429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 672735 + ... + 837411.

It is an arithmetic number, because the mean of its divisors is an integer number (4238811720).

Almost surely, 2^124343156421 is an apocalyptic number.

124343156421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

124343156421 is a deficient number, since it is larger than the sum of its proper divisors (79119806139).

124343156421 is a wasteful number, since it uses less digits than its factorization.

124343156421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164986 (or 164983 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

Adding to 124343156421 its reverse (124651343421), we get a palindrome (248994499842).

The spelling of 124343156421 in words is "one hundred twenty-four billion, three hundred forty-three million, one hundred fifty-six thousand, four hundred twenty-one".