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130421144 = 23721719571
BaseRepresentation
bin1111100011000…
…01000110011000
3100002102002011202
413301201012120
5231341434034
620535213332
73142363400
oct761410630
9302362152
10130421144
116768a377
1237817248
1321035399
141346d800
15b6b347e
hex7c61198

130421144 has 48 divisors (see below), whose sum is σ = 301213080. Its totient is φ = 52604160.

The previous prime is 130421131. The next prime is 130421147. The reversal of 130421144 is 441124031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130421147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3122 + ... + 16449.

Almost surely, 2130421144 is an apocalyptic number.

130421144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

130421144 is an abundant number, since it is smaller than the sum of its proper divisors (170791936).

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

130421144 is a wasteful number, since it uses less digits than its factorization.

130421144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19608 (or 19597 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 130421144 is about 11420.2077038905. The cubic root of 130421144 is about 507.1261455919.

Adding to 130421144 its reverse (441124031), we get a palindrome (571545175).

The spelling of 130421144 in words is "one hundred thirty million, four hundred twenty-one thousand, one hundred forty-four".

Divisors: 1 2 4 7 8 14 17 28 34 49 56 68 98 119 136 196 238 392 476 833 952 1666 3332 6664 19571 39142 78284 136997 156568 273994 332707 547988 665414 958979 1095976 1330828 1917958 2328949 2661656 3835916 4657898 7671832 9315796 16302643 18631592 32605286 65210572 130421144