201252144 has 20 divisors (see below), whose sum is σ = 519901496. Its totient is φ = 67084032.

The previous prime is 201252133. The next prime is 201252151. The reversal of 201252144 is 441252102.

It is a self number, because there is not a number n which added to its sum of digits gives 201252144.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2096329 + ... + 2096424.

Almost surely, 2^201252144 is an apocalyptic number.

201252144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

201252144 is an abundant number, since it is smaller than the sum of its proper divisors (318649352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201252144 is a wasteful number, since it uses less digits than its factorization.

201252144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192764 (or 4192758 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 201252144 is about 14186.3365249806. The cubic root of 201252144 is about 586.0214399623.

The spelling of 201252144 in words is "two hundred one million, two hundred fifty-two thousand, one hundred forty-four".