201423400124021 has 8 divisors (see below), whose sum is σ = 222544523922624. Its totient is φ = 181332575047360.

The previous prime is 201423400123997. The next prime is 201423400124039. The reversal of 201423400124021 is 120421004324102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201423400124021 - 2¹⁴ = 201423400107637 is a prime.

It is a super-2 number, since 2×201423400124021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201423400124041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257574680075 + ... + 257574680856.

It is an arithmetic number, because the mean of its divisors is an integer number (27818065490328).

Almost surely, 2^{201423400124021} is an apocalyptic number.

It is an amenable number.

201423400124021 is a deficient number, since it is larger than the sum of its proper divisors (21121123798603).

201423400124021 is a wasteful number, since it uses less digits than its factorization.

201423400124021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515149360971.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 201423400124021 its reverse (120421004324102), we get a palindrome (321844404448123).

The spelling of 201423400124021 in words is "two hundred one trillion, four hundred twenty-three billion, four hundred million, one hundred twenty-four thousand, twenty-one".