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421024030 = 25729207401
BaseRepresentation
bin11001000110000…
…101000100011110
31002100020020101121
4121012011010132
51330240232110
6105440001154
713301434210
oct3106050436
91070206347
10421024030
111a6725649
12b90001ba
13692c2b5b
143dcb85b0
1526e67cda
hex1918511e

421024030 has 32 divisors (see below), whose sum is σ = 895976640. Its totient is φ = 139372800.

The previous prime is 421024027. The next prime is 421024031. The reversal of 421024030 is 30420124.

It is a super-2 number, since 2×4210240302 = 354522467674881800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421023995 and 421024013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421024031) 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, 101671 + ... + 105730.

It is an arithmetic number, because the mean of its divisors is an integer number (27999270).

Almost surely, 2421024030 is an apocalyptic number.

421024030 is an abundant number, since it is smaller than the sum of its proper divisors (474952610).

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

421024030 is a wasteful number, since it uses less digits than its factorization.

421024030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207444.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 421024030 is about 20518.8700955974. The cubic root of 421024030 is about 749.4953820386.

Adding to 421024030 its reverse (30420124), we get a palindrome (451444154).

The spelling of 421024030 in words is "four hundred twenty-one million, twenty-four thousand, thirty".

Divisors: 1 2 5 7 10 14 29 35 58 70 145 203 290 406 1015 2030 207401 414802 1037005 1451807 2074010 2903614 6014629 7259035 12029258 14518070 30073145 42102403 60146290 84204806 210512015 421024030