161424265 has 8 divisors (see below), whose sum is σ = 205103880. Its totient is φ = 121542912.

The previous prime is 161424227. The next prime is 161424271. The reversal of 161424265 is 562424161.

It is a happy number.

161424265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 91317136 + 70107129 = 9556^2 + 8373^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161424265 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 949470 + ... + 949639.

It is an arithmetic number, because the mean of its divisors is an integer number (25637985).

Almost surely, 2^161424265 is an apocalyptic number.

It is an amenable number.

161424265 is a deficient number, since it is larger than the sum of its proper divisors (43679615).

161424265 is a wasteful number, since it uses less digits than its factorization.

161424265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899131.

The product of its digits is 11520, while the sum is 31.

The square root of 161424265 is about 12705.2849239991. The cubic root of 161424265 is about 544.4896212300.

The spelling of 161424265 in words is "one hundred sixty-one million, four hundred twenty-four thousand, two hundred sixty-five".