127164021 has 8 divisors (see below), whose sum is σ = 170156544. Its totient is φ = 84473760.

The previous prime is 127164019. The next prime is 127164031. The reversal of 127164021 is 120461721.

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

It is not a de Polignac number, because 127164021 - 2¹ = 127164019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 127163982 and 127164000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127164031) 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, 74581 + ... + 76266.

It is an arithmetic number, because the mean of its divisors is an integer number (21269568).

Almost surely, 2^127164021 is an apocalyptic number.

It is an amenable number.

127164021 is a deficient number, since it is larger than the sum of its proper divisors (42992523).

127164021 is a wasteful number, since it uses less digits than its factorization.

127164021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151131.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 127164021 is about 11276.7025765514. The cubic root of 127164021 is about 502.8688690317.

The spelling of 127164021 in words is "one hundred twenty-seven million, one hundred sixty-four thousand, twenty-one".