127042405 has 8 divisors (see below), whose sum is σ = 174229632. Its totient is φ = 87114768.

The previous prime is 127042393. The next prime is 127042451. The reversal of 127042405 is 504240721.

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

It is a cyclic number.

It is not a de Polignac number, because 127042405 - 2¹⁵ = 127009637 is a prime.

It is a super-2 number, since 2×127042405² = 32279545336368050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 127042405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1814857 + ... + 1814926.

It is an arithmetic number, because the mean of its divisors is an integer number (21778704).

Almost surely, 2^127042405 is an apocalyptic number.

It is an amenable number.

127042405 is a deficient number, since it is larger than the sum of its proper divisors (47187227).

127042405 is an equidigital number, since it uses as much as digits as its factorization.

127042405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3629795.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 127042405 is about 11271.3089301997. The cubic root of 127042405 is about 502.7085081411.

The spelling of 127042405 in words is "one hundred twenty-seven million, forty-two thousand, four hundred five".