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130421235 = 3571242107
BaseRepresentation
bin1111100011000…
…01000111110011
3100002102002022010
413301201013303
5231341434420
620535214003
73142363560
oct761410763
9302362263
10130421235
116768a44a
1237817303
1321035439
141346d867
15b6b34e0
hex7c611f3

130421235 has 16 divisors (see below), whose sum is σ = 238484736. Its totient is φ = 59621088.

The previous prime is 130421227. The next prime is 130421243. The reversal of 130421235 is 532124031.

It is an interprime number because it is at equal distance from previous prime (130421227) and next prime (130421243).

It is not a de Polignac number, because 130421235 - 23 = 130421227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 620949 + ... + 621158.

It is an arithmetic number, because the mean of its divisors is an integer number (14905296).

Almost surely, 2130421235 is an apocalyptic number.

130421235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

130421235 is a deficient number, since it is larger than the sum of its proper divisors (108063501).

130421235 is a wasteful number, since it uses less digits than its factorization.

130421235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242122.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 130421235 is about 11420.2116880555. The cubic root of 130421235 is about 507.1262635392.

Adding to 130421235 its reverse (532124031), we get a palindrome (662545266).

The spelling of 130421235 in words is "one hundred thirty million, four hundred twenty-one thousand, two hundred thirty-five".

Divisors: 1 3 5 7 15 21 35 105 1242107 3726321 6210535 8694749 18631605 26084247 43473745 130421235