197920024127 has 4 divisors (see below), whose sum is σ = 226194313296. Its totient is φ = 169645734960.

The previous prime is 197920024109. The next prime is 197920024147. The reversal of 197920024127 is 721420029791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 721420029791 = 37 ⋅19497838643.

It is a cyclic number.

It is not a de Polignac number, because 197920024127 - 2⁶ = 197920024063 is a prime.

It is a super-2 number, since 2×197920024127² (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 (197920024147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14137144574 + ... + 14137144587.

It is an arithmetic number, because the mean of its divisors is an integer number (56548578324).

Almost surely, 2^197920024127 is an apocalyptic number.

197920024127 is a deficient number, since it is larger than the sum of its proper divisors (28274289169).

197920024127 is an equidigital number, since it uses as much as digits as its factorization.

197920024127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28274289168.

The product of its (nonzero) digits is 127008, while the sum is 44.

The spelling of 197920024127 in words is "one hundred ninety-seven billion, nine hundred twenty million, twenty-four thousand, one hundred twenty-seven".