124005152421 has 32 divisors (see below), whose sum is σ = 188651704320. Its totient is φ = 80471506752.

The previous prime is 124005152419. The next prime is 124005152429. The reversal of 124005152421 is 124251500421.

It is a happy number.

124005152421 is a `hidden beast` number, since 1 + 2 + 400 + 5 + 15 + 242 + 1 = 666.

It is not a de Polignac number, because 124005152421 - 2¹ = 124005152419 is a prime.

It is a super-2 number, since 2×124005152421² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124005152429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159430 + ... + 522903.

It is an arithmetic number, because the mean of its divisors is an integer number (5895365760).

Almost surely, 2^124005152421 is an apocalyptic number.

It is an amenable number.

124005152421 is a deficient number, since it is larger than the sum of its proper divisors (64646551899).

124005152421 is a wasteful number, since it uses less digits than its factorization.

124005152421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682522 (or 682516 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 124005152421 its reverse (124251500421), we get a palindrome (248256652842).

The spelling of 124005152421 in words is "one hundred twenty-four billion, five million, one hundred fifty-two thousand, four hundred twenty-one".