161042747 has 2 divisors, whose sum is σ = 161042748. Its totient is φ = 161042746.

The previous prime is 161042701. The next prime is 161042753. The reversal of 161042747 is 747240161.

161042747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161042747 - 2¹² = 161038651 is a prime.

It is a super-2 number, since 2×161042747² = 51869532722612018, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161042767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80521373 + 80521374.

It is an arithmetic number, because the mean of its divisors is an integer number (80521374).

Almost surely, 2^161042747 is an apocalyptic number.

161042747 is a deficient number, since it is larger than the sum of its proper divisors (1).

161042747 is an equidigital number, since it uses as much as digits as its factorization.

161042747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 161042747 is about 12690.2618964307. The cubic root of 161042747 is about 544.0603250486.

The spelling of 161042747 in words is "one hundred sixty-one million, forty-two thousand, seven hundred forty-seven".