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1214421430 = 257313712143
BaseRepresentation
bin100100001100010…
…1001100110110110
310010122011000000111
41020120221212312
54441342441210
6320301133234
742044261155
oct11030514666
93118130014
101214421430
11573566882
1229a85a21a
131647a3681
14b740559c
157193888a
hex486299b6

1214421430 has 32 divisors (see below), whose sum is σ = 2232261504. Its totient is φ = 475577856.

The previous prime is 1214421361. The next prime is 1214421433. The reversal of 1214421430 is 341244121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214421433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93939 + ... + 106081.

It is an arithmetic number, because the mean of its divisors is an integer number (69758172).

Almost surely, 21214421430 is an apocalyptic number.

1214421430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1214421430 is a deficient number, since it is larger than the sum of its proper divisors (1017840074).

1214421430 is a wasteful number, since it uses less digits than its factorization.

1214421430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12360.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1214421430 is about 34848.5498980948. The cubic root of 1214421430 is about 1066.8985890015.

Adding to 1214421430 its reverse (341244121), we get a palindrome (1555665551).

The spelling of 1214421430 in words is "one billion, two hundred fourteen million, four hundred twenty-one thousand, four hundred thirty".

Divisors: 1 2 5 10 73 137 146 274 365 685 730 1370 10001 12143 20002 24286 50005 60715 100010 121430 886439 1663591 1772878 3327182 4432195 8317955 8864390 16635910 121442143 242884286 607210715 1214421430