242856669 has 16 divisors (see below), whose sum is σ = 356892480. Its totient is φ = 145666560.

The previous prime is 242856667. The next prime is 242856671. The reversal of 242856669 is 966658242.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (242856667) and next prime (242856671).

It is not a de Polignac number, because 242856669 - 2¹ = 242856667 is a prime.

It is a super-2 number, since 2×242856669² = 117958723355551122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242856667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34734 + ... + 41135.

It is an arithmetic number, because the mean of its divisors is an integer number (22305780).

Almost surely, 2^242856669 is an apocalyptic number.

It is an amenable number.

242856669 is a deficient number, since it is larger than the sum of its proper divisors (114035811).

242856669 is a wasteful number, since it uses less digits than its factorization.

242856669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75980.

The product of its digits is 1244160, while the sum is 48.

The square root of 242856669 is about 15583.8592460276. The cubic root of 242856669 is about 623.9024312234.

The spelling of 242856669 in words is "two hundred forty-two million, eight hundred fifty-six thousand, six hundred sixty-nine".