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120990974 = 21319257953
BaseRepresentation
bin1110011011000…
…10110011111110
322102122222102012
413031202303332
5221433202344
620001131222
72666256236
oct715426376
9272588365
10120990974
1162329345
1234629b12
131c0b2cc0
14120d6cc6
15a94e29e
hex7362cfe

120990974 has 32 divisors (see below), whose sum is σ = 206750880. Its totient is φ = 52641792.

The previous prime is 120990973. The next prime is 120990977. The reversal of 120990974 is 479099021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120990973) 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 15 ways as a sum of consecutive naturals, for example, 126482 + ... + 127434.

It is an arithmetic number, because the mean of its divisors is an integer number (6460965).

Almost surely, 2120990974 is an apocalyptic number.

120990974 is a deficient number, since it is larger than the sum of its proper divisors (85759906).

120990974 is a wasteful number, since it uses less digits than its factorization.

120990974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 120990974 is about 10999.5897196214. The cubic root of 120990974 is about 494.5964455658.

The spelling of 120990974 in words is "one hundred twenty million, nine hundred ninety thousand, nine hundred seventy-four".

Divisors: 1 2 13 19 26 38 247 257 494 514 953 1906 3341 4883 6682 9766 12389 18107 24778 36214 63479 126958 235391 244921 470782 489842 3183973 4653499 6367946 9306998 60495487 120990974