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126965923 = 7197871213
BaseRepresentation
bin1111001000101…
…01100010100011
322211220112111121
413210111202203
5230000402143
620333153111
73101123020
oct744254243
9284815447
10126965923
116573a417
123662b797
13203c5786
1412c10547
15b22e7ed
hex79158a3

126965923 has 16 divisors (see below), whose sum is σ = 153061120. Its totient is φ = 102884256.

The previous prime is 126965903. The next prime is 126965933. The reversal of 126965923 is 329569621.

It is a cyclic number.

It is not a de Polignac number, because 126965923 - 29 = 126965411 is a prime.

It is a super-2 number, since 2×1269659232 = 32240691206483858, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126965923.

It is not an unprimeable number, because it can be changed into a prime (126965903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104065 + ... + 105277.

It is an arithmetic number, because the mean of its divisors is an integer number (9566320).

Almost surely, 2126965923 is an apocalyptic number.

126965923 is a deficient number, since it is larger than the sum of its proper divisors (26095197).

126965923 is a wasteful number, since it uses less digits than its factorization.

126965923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026.

The product of its digits is 174960, while the sum is 43.

The square root of 126965923 is about 11267.9156457616. The cubic root of 126965923 is about 502.6076077889.

The spelling of 126965923 in words is "one hundred twenty-six million, nine hundred sixty-five thousand, nine hundred twenty-three".

Divisors: 1 7 19 133 787 1213 5509 8491 14953 23047 104671 161329 954631 6682417 18137989 126965923