145146722 has 18 divisors (see below), whose sum is σ = 253474497. Its totient is φ = 62154624.

The previous prime is 145146713. The next prime is 145146733. The reversal of 145146722 is 227641541.

It can be written as a sum of positive squares in 2 ways, for example, as 141110641 + 4036081 = 11879^2 + 2009^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8519.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 118658 + ... + 119874.

Almost surely, 2^145146722 is an apocalyptic number.

145146722 is a deficient number, since it is larger than the sum of its proper divisors (108327775).

145146722 is an frugal number, since it uses more digits than its factorization.

145146722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450 (or 1226 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 145146722 is about 12047.6853378564. The cubic root of 145146722 is about 525.5359268069.

Multiplying 145146722 by its sum of digits (32), we get a square (4644695104 = 68152²).

The spelling of 145146722 in words is "one hundred forty-five million, one hundred forty-six thousand, seven hundred twenty-two".