127740101 has 4 divisors (see below), whose sum is σ = 127762752. Its totient is φ = 127717452.

The previous prime is 127740083. The next prime is 127740103. The reversal of 127740101 is 101047721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 101047721 = 43 ⋅2349947.

It is a cyclic number.

It is not a de Polignac number, because 127740101 - 2⁶ = 127740037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127740103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4586 + ... + 16628.

It is an arithmetic number, because the mean of its divisors is an integer number (31940688).

Almost surely, 2^127740101 is an apocalyptic number.

It is an amenable number.

127740101 is a deficient number, since it is larger than the sum of its proper divisors (22651).

127740101 is a wasteful number, since it uses less digits than its factorization.

127740101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22650.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 127740101 is about 11302.2166409957. The cubic root of 127740101 is about 503.6270927729.

Adding to 127740101 its reverse (101047721), we get a palindrome (228787822).

The spelling of 127740101 in words is "one hundred twenty-seven million, seven hundred forty thousand, one hundred one".