242161293 has 48 divisors (see below), whose sum is σ = 371625408. Its totient is φ = 140025600.

The previous prime is 242161291. The next prime is 242161363. The reversal of 242161293 is 392161242.

It is not a de Polignac number, because 242161293 - 2¹ = 242161291 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 242161293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242161291) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 788646 + ... + 788952.

It is an arithmetic number, because the mean of its divisors is an integer number (7742196).

Almost surely, 2^242161293 is an apocalyptic number.

It is an amenable number.

242161293 is a deficient number, since it is larger than the sum of its proper divisors (129464115).

242161293 is a wasteful number, since it uses less digits than its factorization.

242161293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 415 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 242161293 is about 15561.5324759485. The cubic root of 242161293 is about 623.3063848403.

The spelling of 242161293 in words is "two hundred forty-two million, one hundred sixty-one thousand, two hundred ninety-three".