240219001 has 9 divisors (see below), whose sum is σ = 264229903. Its totient is φ = 218225920.

The previous prime is 240218933. The next prime is 240219017. The reversal of 240219001 is 100912042.

The square root of 240219001 is 15499.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3059001 + 237160000 = 1749^2 + 15400^2 .

It is not a de Polignac number, because 240219001 - 2¹⁷ = 240087929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240219001.

It is not an unprimeable number, because it can be changed into a prime (240219101) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 169785 + ... + 171193.

Almost surely, 2^240219001 is an apocalyptic number.

240219001 is the 15499-th square number.

240219001 is the 7750-th centered octagonal number.

It is an amenable number.

240219001 is a deficient number, since it is larger than the sum of its proper divisors (24010902).

240219001 is an frugal number, since it uses more digits than its factorization.

240219001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840 (or 1420 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The cubic root of 240219001 is about 621.6354678987.

Multiplying 240219001 by its product of nonzero digits (144), we get a square (34591536144 = 185988²).

The spelling of 240219001 in words is "two hundred forty million, two hundred nineteen thousand, one".