20149127 has 8 divisors (see below), whose sum is σ = 21594336. Its totient is φ = 18751392.

The previous prime is 20149123. The next prime is 20149133. The reversal of 20149127 is 72194102.

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 20149127 - 2² = 20149123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20149096 and 20149105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20149123) 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, 10988 + ... + 12689.

It is an arithmetic number, because the mean of its divisors is an integer number (2699292).

Almost surely, 2^20149127 is an apocalyptic number.

20149127 is a deficient number, since it is larger than the sum of its proper divisors (1445209).

20149127 is a wasteful number, since it uses less digits than its factorization.

20149127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23737.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 20149127 is about 4488.7778960425. Note that the first 3 decimals coincide. The cubic root of 20149127 is about 272.1147466767.

The spelling of 20149127 in words is "twenty million, one hundred forty-nine thousand, one hundred twenty-seven".