127122240 has 112 divisors (see below), whose sum is σ = 461296512. Its totient is φ = 29054976.

The previous prime is 127122239. The next prime is 127122257. The reversal of 127122240 is 42221721.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2739 + ... + 16178.

Almost surely, 2^127122240 is an apocalyptic number.

127122240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 127122240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230648256).

127122240 is an abundant number, since it is smaller than the sum of its proper divisors (334174272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

127122240 is a wasteful number, since it uses less digits than its factorization.

127122240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18944 (or 18934 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 127122240 is about 11274.8498881360. The cubic root of 127122240 is about 502.8137888145.

Adding to 127122240 its reverse (42221721), we get a palindrome (169343961).

The spelling of 127122240 in words is "one hundred twenty-seven million, one hundred twenty-two thousand, two hundred forty".