242265621 has 8 divisors (see below), whose sum is σ = 347868640. Its totient is φ = 149086512.

The previous prime is 242265613. The next prime is 242265641. The reversal of 242265621 is 126562242.

It is a happy number.

242265621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 242265621 - 2³ = 242265613 is a prime.

It is a super-2 number, since 2×242265621² = 117385262237031282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242265641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3105931 + ... + 3106008.

It is an arithmetic number, because the mean of its divisors is an integer number (43483580).

Almost surely, 2^242265621 is an apocalyptic number.

It is an amenable number.

242265621 is a deficient number, since it is larger than the sum of its proper divisors (105603019).

242265621 is a wasteful number, since it uses less digits than its factorization.

242265621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6211955.

The product of its digits is 11520, while the sum is 30.

The square root of 242265621 is about 15564.8842270028. The cubic root of 242265621 is about 623.3958830028.

The spelling of 242265621 in words is "two hundred forty-two million, two hundred sixty-five thousand, six hundred twenty-one".