161270141 has 2 divisors, whose sum is σ = 161270142. Its totient is φ = 161270140.

The previous prime is 161270129. The next prime is 161270159. The reversal of 161270141 is 141072161.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157602916 + 3667225 = 12554^2 + 1915^2 .

It is a cyclic number.

It is not a de Polignac number, because 161270141 - 2⁶ = 161270077 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161270111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80635070 + 80635071.

It is an arithmetic number, because the mean of its divisors is an integer number (80635071).

Almost surely, 2^161270141 is an apocalyptic number.

It is an amenable number.

161270141 is a deficient number, since it is larger than the sum of its proper divisors (1).

161270141 is an equidigital number, since it uses as much as digits as its factorization.

161270141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 161270141 is about 12699.2181255383. The cubic root of 161270141 is about 544.3162775251.

The spelling of 161270141 in words is "one hundred sixty-one million, two hundred seventy thousand, one hundred forty-one".