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1230990122 = 2973963199
BaseRepresentation
bin100100101011111…
…0110101100101010
310011210022202222202
41021113312230222
510010113140442
6322052220202
742335146325
oct11127665452
93153282882
101230990122
1158195310a
122a430a662
1316805502b
14b96b97bc
157310cc32
hex495f6b2a

1230990122 has 8 divisors (see below), whose sum is σ = 1846704000. Its totient is φ = 615422124.

The previous prime is 1230990097. The next prime is 1230990127. The reversal of 1230990122 is 2210990321.

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

It is not an unprimeable number, because it can be changed into a prime (1230990127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12122 + ... + 51077.

It is an arithmetic number, because the mean of its divisors is an integer number (230838000).

Almost surely, 21230990122 is an apocalyptic number.

1230990122 is a deficient number, since it is larger than the sum of its proper divisors (615713878).

1230990122 is an equidigital number, since it uses as much as digits as its factorization.

1230990122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72940.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1230990122 is about 35085.4688154512. The cubic root of 1230990122 is about 1071.7286878601.

The spelling of 1230990122 in words is "one billion, two hundred thirty million, nine hundred ninety thousand, one hundred twenty-two".

Divisors: 1 2 9739 19478 63199 126398 615495061 1230990122