127749804 has 72 divisors (see below), whose sum is σ = 368928000. Its totient is φ = 33688512.

The previous prime is 127749793. The next prime is 127749829. The reversal of 127749804 is 408947721.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9697 + ... + 18695.

It is an arithmetic number, because the mean of its divisors is an integer number (5124000).

Almost surely, 2^127749804 is an apocalyptic number.

127749804 is a gapful number since it is divisible by the number (14) 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 127749804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184464000).

127749804 is an abundant number, since it is smaller than the sum of its proper divisors (241178196).

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

127749804 is a wasteful number, since it uses less digits than its factorization.

127749804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9039 (or 9024 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 127749804 is about 11302.6458849245. The cubic root of 127749804 is about 503.6398441066.

It can be divided in two parts, 12774 and 9804, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 127749804 in words is "one hundred twenty-seven million, seven hundred forty-nine thousand, eight hundred four".