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1430442 = 232136113
BaseRepresentation
bin101011101001110101010
32200200012100
411131032222
5331233232
650354230
715105246
oct5351652
92620170
101430442
11897792
1258b976
133b1120
14293426
151d3c7c
hex15d3aa

1430442 has 24 divisors (see below), whose sum is σ = 3338244. Its totient is φ = 440064.

The previous prime is 1430441. The next prime is 1430461. The reversal of 1430442 is 2440341.

It can be written as a sum of positive squares in 2 ways, for example, as 1390041 + 40401 = 1179^2 + 201^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1430441) 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, 2823 + ... + 3290.

21430442 is an apocalyptic number.

1430442 is an abundant number, since it is smaller than the sum of its proper divisors (1907802).

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

1430442 is a wasteful number, since it uses less digits than its factorization.

1430442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6134 (or 6131 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1430442 is about 1196.0108695158. The cubic root of 1430442 is about 112.6739235704.

Adding to 1430442 its reverse (2440341), we get a palindrome (3870783).

The spelling of 1430442 in words is "one million, four hundred thirty thousand, four hundred forty-two".

Divisors: 1 2 3 6 9 13 18 26 39 78 117 234 6113 12226 18339 36678 55017 79469 110034 158938 238407 476814 715221 1430442