162542121 has 16 divisors (see below), whose sum is σ = 252954624. Its totient is φ = 90904464.

The previous prime is 162542119. The next prime is 162542123. The reversal of 162542121 is 121245261.

It is an interprime number because it is at equal distance from previous prime (162542119) and next prime (162542123).

It is not a de Polignac number, because 162542121 - 2¹ = 162542119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 162542091 and 162542100.

It is not an unprimeable number, because it can be changed into a prime (162542123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81355 + ... + 83328.

It is an arithmetic number, because the mean of its divisors is an integer number (15809664).

Almost surely, 2^162542121 is an apocalyptic number.

It is an amenable number.

162542121 is a deficient number, since it is larger than the sum of its proper divisors (90412503).

162542121 is a wasteful number, since it uses less digits than its factorization.

162542121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164740.

The product of its digits is 960, while the sum is 24.

The square root of 162542121 is about 12749.2007984814. The cubic root of 162542121 is about 545.7435867493.

Adding to 162542121 its reverse (121245261), we get a palindrome (283787382).

The spelling of 162542121 in words is "one hundred sixty-two million, five hundred forty-two thousand, one hundred twenty-one".