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42054430 = 25111743523
BaseRepresentation
bin1010000001101…
…1001100011110
32221010120211111
42200123030132
541231220210
64101212234
71020312445
oct240331436
987116744
1042054430
1121814130
121210107a
1389359a2
145829d5c
153a5a88a
hex281b31e

42054430 has 64 divisors (see below), whose sum is σ = 89641728. Its totient is φ = 14031360.

The previous prime is 42054421. The next prime is 42054431. The reversal of 42054430 is 3445024.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42054431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80149 + ... + 80671.

It is an arithmetic number, because the mean of its divisors is an integer number (1400652).

Almost surely, 242054430 is an apocalyptic number.

42054430 is an abundant number, since it is smaller than the sum of its proper divisors (47587298).

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

42054430 is a wasteful number, since it uses less digits than its factorization.

42054430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 42054430 is about 6484.9387044135. The cubic root of 42054430 is about 347.7527585026.

Adding to 42054430 its reverse (3445024), we get a palindrome (45499454).

The spelling of 42054430 in words is "forty-two million, fifty-four thousand, four hundred thirty".

Divisors: 1 2 5 10 11 17 22 34 43 55 85 86 110 170 187 215 374 430 473 523 731 935 946 1046 1462 1870 2365 2615 3655 4730 5230 5753 7310 8041 8891 11506 16082 17782 22489 28765 40205 44455 44978 57530 80410 88910 97801 112445 195602 224890 247379 382313 489005 494758 764626 978010 1236895 1911565 2473790 3823130 4205443 8410886 21027215 42054430