242786623 has 4 divisors (see below), whose sum is σ = 244640088. Its totient is φ = 240933160.

The previous prime is 242786581. The next prime is 242786629. The reversal of 242786623 is 326687242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242786623 - 2¹⁷ = 242655551 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 (242786629) 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, 926536 + ... + 926797.

It is an arithmetic number, because the mean of its divisors is an integer number (61160022).

Almost surely, 2^242786623 is an apocalyptic number.

242786623 is a deficient number, since it is larger than the sum of its proper divisors (1853465).

242786623 is a wasteful number, since it uses less digits than its factorization.

242786623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853464.

The product of its digits is 193536, while the sum is 40.

The square root of 242786623 is about 15581.6116945584. The cubic root of 242786623 is about 623.8424423801.

The spelling of 242786623 in words is "two hundred forty-two million, seven hundred eighty-six thousand, six hundred twenty-three".