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4122100399 = 18679220681
BaseRepresentation
bin1111010110110010…
…0100001010101111
3101122021110101201011
43311230210022233
531420224203044
61521010530051
7204102163264
oct36554441257
911567411634
104122100399
11182590004a
12970596927
13509002681
142b165926b
15191d43134
hexf5b242af

4122100399 has 4 divisors (see below), whose sum is σ = 4122339760. Its totient is φ = 4121861040.

The previous prime is 4122100379. The next prime is 4122100459. The reversal of 4122100399 is 9930012214.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9930012214 = 24965006107.

It is a cyclic number.

It is not a de Polignac number, because 4122100399 - 213 = 4122092207 is a prime.

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 4122100399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4122100309) 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, 91662 + ... + 129019.

It is an arithmetic number, because the mean of its divisors is an integer number (1030584940).

Almost surely, 24122100399 is an apocalyptic number.

4122100399 is a deficient number, since it is larger than the sum of its proper divisors (239361).

4122100399 is a wasteful number, since it uses less digits than its factorization.

4122100399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239360.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 4122100399 is about 64203.5855618672. The cubic root of 4122100399 is about 1603.3912963179.

The spelling of 4122100399 in words is "four billion, one hundred twenty-two million, one hundred thousand, three hundred ninety-nine".

Divisors: 1 18679 220681 4122100399