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1292125130 = 25129212513
BaseRepresentation
bin100110100000100…
…0100001111001010
310100001100202110022
41031001010033022
510121241001010
6332114420442
744006611442
oct11501041712
93301322408
101292125130
1160340980a
12300891722
1317790b7aa
14c3871122
1578686d55
hex4d0443ca

1292125130 has 8 divisors (see below), whose sum is σ = 2325825252. Its totient is φ = 516850048.

The previous prime is 1292125099. The next prime is 1292125141. The reversal of 1292125130 is 315212921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1281711601 + 10413529 = 35801^2 + 3227^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1292125130.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64606247 + ... + 64606266.

Almost surely, 21292125130 is an apocalyptic number.

1292125130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1292125130 is a deficient number, since it is larger than the sum of its proper divisors (1033700122).

1292125130 is a wasteful number, since it uses less digits than its factorization.

1292125130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129212520.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1292125130 is about 35946.1420739417. The cubic root of 1292125130 is about 1089.1846805328.

The spelling of 1292125130 in words is "one billion, two hundred ninety-two million, one hundred twenty-five thousand, one hundred thirty".

Divisors: 1 2 5 10 129212513 258425026 646062565 1292125130