242690684247 has 20 divisors (see below), whose sum is σ = 395495931336. Its totient is φ = 147085262640.

The previous prime is 242690684231. The next prime is 242690684261. The reversal of 242690684247 is 742486096242.

It is a happy number.

It is not a de Polignac number, because 242690684247 - 2⁴ = 242690684231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242690684193 and 242690684202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242690684267) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 136189168 + ... + 136190949.

Almost surely, 2^242690684247 is an apocalyptic number.

242690684247 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

242690684247 is a deficient number, since it is larger than the sum of its proper divisors (152805247089).

242690684247 is a wasteful number, since it uses less digits than its factorization.

242690684247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272380140 (or 272380131 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 54.

The spelling of 242690684247 in words is "two hundred forty-two billion, six hundred ninety million, six hundred eighty-four thousand, two hundred forty-seven".