127401666 has 48 divisors (see below), whose sum is σ = 297556416. Its totient is φ = 36259104.

The previous prime is 127401653. The next prime is 127401683. The reversal of 127401666 is 666104721.

It is a congruent number.

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, 92515 + ... + 93881.

It is an arithmetic number, because the mean of its divisors is an integer number (6199092).

Almost surely, 2^127401666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 127401666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148778208).

127401666 is an abundant number, since it is smaller than the sum of its proper divisors (170154750).

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

127401666 is a wasteful number, since it uses less digits than its factorization.

127401666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703 (or 1696 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 127401666 is about 11287.2346480438. The cubic root of 127401666 is about 503.1819290339.

The spelling of 127401666 in words is "one hundred twenty-seven million, four hundred one thousand, six hundred sixty-six".