161428127 has 8 divisors (see below), whose sum is σ = 188414976. Its totient is φ = 135422712.

The previous prime is 161428117. The next prime is 161428133. The reversal of 161428127 is 721824161.

It is a happy number.

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 161428127 - 2¹⁰ = 161427103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161428093 and 161428102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161428117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245003 + ... + 245660.

It is an arithmetic number, because the mean of its divisors is an integer number (23551872).

Almost surely, 2^161428127 is an apocalyptic number.

161428127 is a deficient number, since it is larger than the sum of its proper divisors (26986849).

161428127 is an equidigital number, since it uses as much as digits as its factorization.

161428127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490717.

The product of its digits is 5376, while the sum is 32.

The square root of 161428127 is about 12705.4369070882. The cubic root of 161428127 is about 544.4939634152.

The spelling of 161428127 in words is "one hundred sixty-one million, four hundred twenty-eight thousand, one hundred twenty-seven".