20150127 has 20 divisors (see below), whose sum is σ = 31687480. Its totient is φ = 12725424.

The previous prime is 20150111. The next prime is 20150131. The reversal of 20150127 is 72105102.

It is not a de Polignac number, because 20150127 - 2⁴ = 20150111 is a prime.

It is a super-2 number, since 2×20150127² = 812055236232258, 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 (20150177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5008 + ... + 8085.

It is an arithmetic number, because the mean of its divisors is an integer number (1584374).

Almost surely, 2^20150127 is an apocalyptic number.

20150127 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20150127 is a deficient number, since it is larger than the sum of its proper divisors (11537353).

20150127 is a wasteful number, since it uses less digits than its factorization.

20150127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13124 (or 13115 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 20150127 is about 4488.8892835533. The cubic root of 20150127 is about 272.1192482819.

Adding to 20150127 its reverse (72105102), we get a palindrome (92255229).

The spelling of 20150127 in words is "twenty million, one hundred fifty thousand, one hundred twenty-seven".