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126970523 = 139913457
BaseRepresentation
bin1111001000101…
…10101010011011
322211220202210222
413210112222123
5230001024043
620333230255
73101142311
oct744265233
9284822728
10126970523
1165742919
123663238b
13203c78b4
1412c120b1
15b230d68
hex7916a9b

126970523 has 4 divisors (see below), whose sum is σ = 127884120. Its totient is φ = 126056928.

The previous prime is 126970517. The next prime is 126970553. The reversal of 126970523 is 325079621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325079621 = 337396377.

It is a cyclic number.

It is not a de Polignac number, because 126970523 - 222 = 122776219 is a prime.

It is a super-3 number, since 3×1269705233 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126970553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456590 + ... + 456867.

It is an arithmetic number, because the mean of its divisors is an integer number (31971030).

Almost surely, 2126970523 is an apocalyptic number.

126970523 is a deficient number, since it is larger than the sum of its proper divisors (913597).

126970523 is an equidigital number, since it uses as much as digits as its factorization.

126970523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913596.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 126970523 is about 11268.1197632968. The cubic root of 126970523 is about 502.6136775726.

The spelling of 126970523 in words is "one hundred twenty-six million, nine hundred seventy thousand, five hundred twenty-three".

Divisors: 1 139 913457 126970523