145721162 has 4 divisors (see below), whose sum is σ = 218581746. Its totient is φ = 72860580.

The previous prime is 145721129. The next prime is 145721167. The reversal of 145721162 is 261127541.

145721162 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 261127541 = 3373 ⋅77417.

It can be written as a sum of positive squares in only one way, i.e., 87030241 + 58690921 = 9329^2 + 7661^2 .

It is not an unprimeable number, because it can be changed into a prime (145721167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36430289 + ... + 36430292.

Almost surely, 2^145721162 is an apocalyptic number.

145721162 is a deficient number, since it is larger than the sum of its proper divisors (72860584).

145721162 is an equidigital number, since it uses as much as digits as its factorization.

145721162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72860583.

The product of its digits is 3360, while the sum is 29.

The square root of 145721162 is about 12071.5020606385. The cubic root of 145721162 is about 526.2283100499.

The spelling of 145721162 in words is "one hundred forty-five million, seven hundred twenty-one thousand, one hundred sixty-two".