242973556237 has 4 divisors (see below), whose sum is σ = 243498337600. Its totient is φ = 242448774876.

The previous prime is 242973556229. The next prime is 242973556247. The reversal of 242973556237 is 732655379242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 242973556237 - 2³ = 242973556229 is a prime.

It is a super-2 number, since 2×242973556237² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242973556247) 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, 262389987 + ... + 262390912.

It is an arithmetic number, because the mean of its divisors is an integer number (60874584400).

Almost surely, 2^242973556237 is an apocalyptic number.

It is an amenable number.

242973556237 is a deficient number, since it is larger than the sum of its proper divisors (524781363).

242973556237 is an equidigital number, since it uses as much as digits as its factorization.

242973556237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524781362.

The product of its digits is 19051200, while the sum is 55.

The spelling of 242973556237 in words is "two hundred forty-two billion, nine hundred seventy-three million, five hundred fifty-six thousand, two hundred thirty-seven".