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12402973243 = 82914961367
BaseRepresentation
bin10111000110100011…
…00101101000111011
31012000101101022201101
423203101211220323
5200400130120433
65410422432231
7616233350563
oct134321455073
935011338641
1012402973243
115295178411
1224a1892677
1312287a752b
14859357da3
154c8d2007d
hex2e3465a3b

12402973243 has 4 divisors (see below), whose sum is σ = 12417935440. Its totient is φ = 12388011048.

The previous prime is 12402973213. The next prime is 12402973249. The reversal of 12402973243 is 34237920421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12402973243 - 213 = 12402965051 is a prime.

It is a super-3 number, since 3×124029732433 (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12402973249) 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, 7479855 + ... + 7481512.

It is an arithmetic number, because the mean of its divisors is an integer number (3104483860).

Almost surely, 212402973243 is an apocalyptic number.

12402973243 is a deficient number, since it is larger than the sum of its proper divisors (14962197).

12402973243 is an equidigital number, since it uses as much as digits as its factorization.

12402973243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14962196.

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 12402973243 in words is "twelve billion, four hundred two million, nine hundred seventy-three thousand, two hundred forty-three".

Divisors: 1 829 14961367 12402973243