240572621 has 4 divisors (see below), whose sum is σ = 241147200. Its totient is φ = 239998044.

The previous prime is 240572611. The next prime is 240572669. The reversal of 240572621 is 126275042.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 126275042 = 2 ⋅63137521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240572621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240572611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286661 + ... + 287498.

It is an arithmetic number, because the mean of its divisors is an integer number (60286800).

Almost surely, 2^240572621 is an apocalyptic number.

It is an amenable number.

240572621 is a deficient number, since it is larger than the sum of its proper divisors (574579).

240572621 is an equidigital number, since it uses as much as digits as its factorization.

240572621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574578.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 240572621 is about 15510.4036375589. The cubic root of 240572621 is about 621.9403493559.

The spelling of 240572621 in words is "two hundred forty million, five hundred seventy-two thousand, six hundred twenty-one".