240219901 has 2 divisors, whose sum is σ = 240219902. Its totient is φ = 240219900.

The previous prime is 240219893. The next prime is 240219919. The reversal of 240219901 is 109912042.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240219001 + 900 = 15499^2 + 30^2 .

It is a cyclic number.

It is not a de Polignac number, because 240219901 - 2³ = 240219893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240219901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240219101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120109950 + 120109951.

It is an arithmetic number, because the mean of its divisors is an integer number (120109951).

Almost surely, 2^240219901 is an apocalyptic number.

It is an amenable number.

240219901 is a deficient number, since it is larger than the sum of its proper divisors (1).

240219901 is an equidigital number, since it uses as much as digits as its factorization.

240219901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 240219901 is about 15499.0290341040. The cubic root of 240219901 is about 621.6362442336.

The spelling of 240219901 in words is "two hundred forty million, two hundred nineteen thousand, nine hundred one".