207217442 has 8 divisors (see below), whose sum is σ = 324340416. Its totient is φ = 99103972.

The previous prime is 207217421. The next prime is 207217469. The reversal of 207217442 is 244712702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2252318 + ... + 2252409.

It is an arithmetic number, because the mean of its divisors is an integer number (40542552).

Almost surely, 2^207217442 is an apocalyptic number.

207217442 is a deficient number, since it is larger than the sum of its proper divisors (117122974).

207217442 is a wasteful number, since it uses less digits than its factorization.

207217442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4504752.

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 207217442 is about 14395.0492183945. The cubic root of 207217442 is about 591.7552269826.

The spelling of 207217442 in words is "two hundred seven million, two hundred seventeen thousand, four hundred forty-two".