127661042 has 8 divisors (see below), whose sum is σ = 191908332. Its totient is φ = 63691600.

The previous prime is 127660999. The next prime is 127661081. The reversal of 127661042 is 240166721.

It can be written as a sum of positive squares in 2 ways, for example, as 123854641 + 3806401 = 11129^2 + 1951^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 127660996 and 127661014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68309 + ... + 70152.

Almost surely, 2^127661042 is an apocalyptic number.

127661042 is a deficient number, since it is larger than the sum of its proper divisors (64247290).

127661042 is a wasteful number, since it uses less digits than its factorization.

127661042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138924.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 127661042 is about 11298.7185999121. The cubic root of 127661042 is about 503.5231722056.

The spelling of 127661042 in words is "one hundred twenty-seven million, six hundred sixty-one thousand, forty-two".