Search a number
-
+
130943742 = 2389379647
BaseRepresentation
bin1111100111000…
…00101011111110
3100010101122001020
413303200223332
5232010144432
620554325010
73150001116
oct763405376
9303348036
10130943742
1167a06a76
1237a29766
1321189207
1413568046
15b76822c
hex7ce0afe

130943742 has 32 divisors (see below), whose sum is σ = 265939200. Its totient is φ = 42977088.

The previous prime is 130943737. The next prime is 130943749. The reversal of 130943742 is 247349031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130943749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202063 + ... + 202709.

It is an arithmetic number, because the mean of its divisors is an integer number (8310600).

Almost surely, 2130943742 is an apocalyptic number.

130943742 is an abundant number, since it is smaller than the sum of its proper divisors (134995458).

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

130943742 is a wasteful number, since it uses less digits than its factorization.

130943742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 130943742 is about 11443.0652362031. The cubic root of 130943742 is about 507.8025949885.

It can be divided in two parts, 13094 and 3742, that added together give a triangular number (16836 = T183).

The spelling of 130943742 in words is "one hundred thirty million, nine hundred forty-three thousand, seven hundred forty-two".

Divisors: 1 2 3 6 89 178 267 379 534 647 758 1137 1294 1941 2274 3882 33731 57583 67462 101193 115166 172749 202386 245213 345498 490426 735639 1471278 21823957 43647914 65471871 130943742