242061021 has 16 divisors (see below), whose sum is σ = 362094720. Its totient is φ = 159805440.

The previous prime is 242061019. The next prime is 242061023. The reversal of 242061021 is 120160242.

It is an interprime number because it is at equal distance from previous prime (242061019) and next prime (242061023).

It is not a de Polignac number, because 242061021 - 2¹ = 242061019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242060985 and 242061003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242061023) 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, 40740 + ... + 46301.

It is an arithmetic number, because the mean of its divisors is an integer number (22630920).

Almost surely, 2^242061021 is an apocalyptic number.

It is an amenable number.

242061021 is a deficient number, since it is larger than the sum of its proper divisors (120033699).

242061021 is a wasteful number, since it uses less digits than its factorization.

242061021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87153 (or 87147 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 242061021 is about 15558.3103517059. The cubic root of 242061021 is about 623.2203419038.

The spelling of 242061021 in words is "two hundred forty-two million, sixty-one thousand, twenty-one".