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60142420 = 22513231317
BaseRepresentation
bin1110010101101…
…1001101010100
311012011112220001
43211123031110
5110344024140
65545021044
71330126222
oct345331524
9135145801
1060142420
1130a48988
1218184784
13c5c9a40
147db7b12
15542ee9a
hex395b354

60142420 has 24 divisors (see below), whose sum is σ = 136014984. Its totient is φ = 22206336.

The previous prime is 60142409. The next prime is 60142451. The reversal of 60142420 is 2424106.

It can be written as a sum of positive squares in 4 ways, for example, as 4251844 + 55890576 = 2062^2 + 7476^2 .

It is a super-2 number, since 2×601424202 = 7234221366912800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115399 + ... + 115918.

It is an arithmetic number, because the mean of its divisors is an integer number (5667291).

Almost surely, 260142420 is an apocalyptic number.

It is an amenable number.

60142420 is an abundant number, since it is smaller than the sum of its proper divisors (75872564).

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

60142420 is a wasteful number, since it uses less digits than its factorization.

60142420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231339 (or 231337 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 60142420 is about 7755.1544149682. The cubic root of 60142420 is about 391.7962723836.

Adding to 60142420 its reverse (2424106), we get a palindrome (62566526).

The spelling of 60142420 in words is "sixty million, one hundred forty-two thousand, four hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 231317 462634 925268 1156585 2313170 3007121 4626340 6014242 12028484 15035605 30071210 60142420