162061421 has 4 divisors (see below), whose sum is σ = 162876000. Its totient is φ = 161246844.

The previous prime is 162061379. The next prime is 162061441. The reversal of 162061421 is 124160261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124160261 = 239 ⋅519499.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162061421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162061441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406991 + ... + 407388.

It is an arithmetic number, because the mean of its divisors is an integer number (40719000).

Almost surely, 2^162061421 is an apocalyptic number.

It is an amenable number.

162061421 is a deficient number, since it is larger than the sum of its proper divisors (814579).

162061421 is an equidigital number, since it uses as much as digits as its factorization.

162061421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814578.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 162061421 is about 12730.3346774545. The cubic root of 162061421 is about 545.2050638136.

The spelling of 162061421 in words is "one hundred sixty-two million, sixty-one thousand, four hundred twenty-one".