742161 has 16 divisors (see below), whose sum is σ = 1152000. Its totient is φ = 416208.

The previous prime is 742153. The next prime is 742193. The reversal of 742161 is 161247.

It is not a de Polignac number, because 742161 - 2³ = 742153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (742111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 940 + ... + 1538.

It is an arithmetic number, because the mean of its divisors is an integer number (72000).

2⁷⁴²¹⁶¹ is an apocalyptic number.

It is an amenable number.

742161 is a deficient number, since it is larger than the sum of its proper divisors (409839).

742161 is a wasteful number, since it uses less digits than its factorization.

742161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668.

The product of its digits is 336, while the sum is 21.

The square root of 742161 is about 861.4876667718. The cubic root of 742161 is about 90.5383779518.

It can be divided in two parts, 742 and 161, that added together give a triangular number (903 = T₄₂).

The spelling of 742161 in words is "seven hundred forty-two thousand, one hundred sixty-one".