242197290 has 80 divisors (see below), whose sum is σ = 657790848. Its totient is φ = 63936864.

The previous prime is 242197289. The next prime is 242197303. The reversal of 242197290 is 92791242.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 81979 + ... + 84881.

Almost surely, 2^242197290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242197290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328895424).

242197290 is an abundant number, since it is smaller than the sum of its proper divisors (415593558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242197290 is a wasteful number, since it uses less digits than its factorization.

242197290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025 (or 3016 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 242197290 is about 15562.6890349965. The cubic root of 242197290 is about 623.3372679045.

The spelling of 242197290 in words is "two hundred forty-two million, one hundred ninety-seven thousand, two hundred ninety".