127021797 has 16 divisors (see below), whose sum is σ = 215063680. Its totient is φ = 72583776.

The previous prime is 127021781. The next prime is 127021799. The reversal of 127021797 is 797120721.

It is not a de Polignac number, because 127021797 - 2⁴ = 127021781 is a prime.

It is a super-2 number, since 2×127021797² = 32269073826218418, which 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 (127021799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335848 + ... + 336225.

It is an arithmetic number, because the mean of its divisors is an integer number (13441480).

Almost surely, 2^127021797 is an apocalyptic number.

It is an amenable number.

127021797 is a deficient number, since it is larger than the sum of its proper divisors (88041883).

127021797 is an equidigital number, since it uses as much as digits as its factorization.

127021797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672089 (or 672083 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 36.

The square root of 127021797 is about 11270.3947135848. The cubic root of 127021797 is about 502.6813246266.

The spelling of 127021797 in words is "one hundred twenty-seven million, twenty-one thousand, seven hundred ninety-seven".