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242967138 = 2340494523
BaseRepresentation
bin11100111101101…
…10001001100010
3121221012000020220
432132312021202
5444144422023
640035343510
76010121001
oct1636661142
9557160226
10242967138
1111516a897
1269451b96
133b44c54b
14243a8c38
15164e53e3
hexe7b6262

242967138 has 8 divisors (see below), whose sum is σ = 485934288. Its totient is φ = 80989044.

The previous prime is 242967113. The next prime is 242967139. The reversal of 242967138 is 831769242.

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

242967138 is an admirable number.

It is a super-2 number, since 2×2429671382 = 118066060295822088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 242967138.

It is not an unprimeable number, because it can be changed into a prime (242967139) 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, 20247256 + ... + 20247267.

It is an arithmetic number, because the mean of its divisors is an integer number (60741786).

Almost surely, 2242967138 is an apocalyptic number.

242967138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

242967138 is a wasteful number, since it uses less digits than its factorization.

242967138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40494528.

The product of its digits is 145152, while the sum is 42.

The square root of 242967138 is about 15587.4031833401. The cubic root of 242967138 is about 623.9970157237.

The spelling of 242967138 in words is "two hundred forty-two million, nine hundred sixty-seven thousand, one hundred thirty-eight".

Divisors: 1 2 3 6 40494523 80989046 121483569 242967138