124001425511421 has 4 divisors (see below), whose sum is σ = 165335234015232. Its totient is φ = 82667617007612.

The previous prime is 124001425511371. The next prime is 124001425511477. The reversal of 124001425511421 is 124115524100421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 124001425511421 - 2⁶ = 124001425511357 is a prime.

It is a super-2 number, since 2×124001425511421² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124001425511221) 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, 20666904251901 + ... + 20666904251906.

It is an arithmetic number, because the mean of its divisors is an integer number (41333808503808).

Almost surely, 2^{124001425511421} is an apocalyptic number.

It is an amenable number.

124001425511421 is a deficient number, since it is larger than the sum of its proper divisors (41333808503811).

124001425511421 is an equidigital number, since it uses as much as digits as its factorization.

124001425511421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41333808503810.

The product of its (nonzero) digits is 12800, while the sum is 33.

Adding to 124001425511421 its reverse (124115524100421), we get a palindrome (248116949611842).

The spelling of 124001425511421 in words is "one hundred twenty-four trillion, one billion, four hundred twenty-five million, five hundred eleven thousand, four hundred twenty-one".